# Simulatenous Equations

1. Dec 4, 2011

### lloydowen

1. The problem statement, all variables and given/known data

I am asked to find the two variables in a simulatenous equation. Now I have found one variable but unsure on how to find the other (P2).

2. Relevant equations
$5p1 - 4p2 = 49$
$3p1 + 2p2 = 3$

3. The attempt at a solution

$5p1 - 4p2 = 49$ (Multiply by 2)
$3p1 + 2p2 = 3$ (Multiply by 4)

$10p1 = 98$
$12p1=12$

$22p1=110$
$p1=5$ (110 divided by 22)

2. Dec 4, 2011

### ArcanaNoir

plug the value of p1 back into either equation to find p2. Actually, put it back in to both to make sure you get the same answer for p2 each time.

3. Dec 4, 2011

### lloydowen

Thank you! I couldn't quite remember what to do.

So what I got was
$(5(5) - 49)/4 = -6$
$(5(3) - 3)/2 = -6$

So $P2 = -6$ Thanks!!!