# Math -- Solving System of Equations With 2 Variables

**What does it mean?**

We get from our teacher 2 equations with 2 variables and we need to solve them. If you are here reading me so far...is because you like the way Lord handles the problem right?

Forget if its useful or why they torture you with these stupid equations; let's go to grab this bull by the horns!

If you ever moved from house to house, when you were a kid younger than now. Have you ever noticed how Mom and Dad put stuff in Boxes so nothing will break or get lost easily? That's what Mnemonics does, it helps to put your brain focus on something otherwise scary or hard to learn.

**EXAMPLE**

**VARIABLES X,Y**

**FIRST EQUATION**

**3X+2Y=19**

**SECOND EQUATION**

**2X+Y=12**

**YOUR TEACHER ASKS YOU TO SOLVE THE PROBLEM, WHICH MEANS YOU HAVE TO FIND THE VALUE OF X AND Y**

**SOLUTION**

**WE ISOLATE Y IN THE SECOND EQUATION**

**2X+Y=12**

**Y=12-2X**

**WE REPLACE THIS Y IN THE FIRST EQUATION**

**3X+2(12-2X)=19**

**WE SOLVE THIS EQUATION WITH VARIABLE X..**

**IF YOU ARE NOT READY, GO TO MR. BOUNCER TRICK TUTORIAL**

****

**3X+24-4X=19**

**3X-4X=19-24**

**-X=-5**

**X=5**

**IF we know that x=5 then we can replace the value of x in any of the stated equations**

**let's use this one**

**2X+Y=12**

**2(5)+Y=12**

**10+Y=12**

**Y=12-10**

**Y=2**

**Now you wonder why we normal people have to learn all these? Well, is part of the education systems and we have to graduate from High School. Math is useful for other applications that these geeks bragg about. But don't get me wrong, math is like any subject...you've gotta pass it! and graduate!! Now, unless..you want to make graphics or games or future wii or X-Box games...huh? or maybe design future cars, huh?**

**NEXT SECOND WAY OF SOLVING IT**

** IN ANOTHER HUB...TAKE A BREAK SAMMY!**

## Save these links... Learning Calculus the easy way!

- Calculus demystified

Friend hubbers asked for this topic. We try to be very practical and hopefully we will get to the masses, as our tutor did with us, when kids. - CALCULUS DEMYSTIFIED PART 2

Derivatives and its applications. Practical examples and actual everyday usage. - Calculus demystified Part 3

On our third part we give a nice introduction to Integrals and Antiderivatives. - Calculus demystified Part 4

Since we started to study ourselves this crazy math..we wanted to find ways to simplify 'Heuristically' using easier Methods and our own Mnemonics instilled in us by our Tutor... That our Dad got us in Junior High. Lucky us right? Using some rules of

## Comments

You have missed your calling, you should have been a teacher. Since you have explained it looks more simple. Great Hub! :)

Great hub. It is explained wery clear. You made it so easy to be done. Thank you for sharing it. Remain blessed always.

The problem I always had with algebra was that I didn't understand why sometimes the letter changed. Sometimes the unknown variable was X,A,Q,Y, etc. Once someone explained to me that it was just a "container" for the number, it made a lot more sense, because I just put the number into the "container".

U seem to be quite a math pro!! thats 1 sub i never liked so much. this was a nice hub, very easily explained and for me easily understood :-).

carrie

I am in awe of this hub, its a great tool for children and adult of all ages.

thanks for the memory ride into the past. I use math and algebra everyday building excel formulas for data base mining. Basic stuff that helps come up with answers for the boss. Sometimes I don't remember and off to the net I go, but this lesson I will remember, thanks again , , ,

Nice explanation of the substitution method of solving a system of simultaneous equations. Looking forward to your next hub on the linear combination method. Seriously, your explanations is clear and easily understood, as evidenced by the other comments from hubbers who were not math geeks.

LOL!! OK I can refresh a mathematics class at high school for now. Nice hub!!

what a simple way to find the answers, you are amazing my friend. thanks for sharing this, voted up

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