SOLUTION: 3x-2y=2 5x-5y=10 x=? y=? Not sure where to start at.

Question 273702: 3x-2y=2
5x-5y=10
x=?
y=?
Not sure where to start at.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Eq. 1:

Eq. 2:

Substitution Method

Multiply both sides of equation 2 by

:

Eq. 2a:

Solve for

:

Eq. 2b:

Substitute the expression in

for

in equation 1:

Eq. 1a:

Solve for

and when you have a value for

, substitute that value into either of the original equations and solve for

.

Elimination Method

Multiply equation 1 by 5 and equation 2 by -2:

Eq. 1a:

Eq. 2a:

Add the two equations:

Eq. 1a + Eq. 2a:

Solve for

and when you have a value for

, substitute that value into either of the original equations and solve for

.

Substitution and Elimination are two ways to do it. Since the coordinates of the ordered pair in the solution set are integers, you could also do this one by graphing. And then there is always Cramer's Rule...

John

RELATED QUESTIONS
x + 2y = 8. Not sure where to... (answered by Fombitz)

simplify: x^5/2 - 2x^5 + 3x^5/2 Not even sure where to... (answered by stanbon)

f(x) = -x -2 I'm not sure where to... (answered by Earlsdon)

This question is very confusing. I don't even know where to start. 5x/2 - y = 9/10... (answered by rajagopalan)

how do i factor this? im not sure where to start. I forgot my textbook at school.... (answered by mananth)

I am not sure where to start with this one. Graph... (answered by stanbon)

Graph each equation. Plot at least five points for each equation. X-2Y=6 NOT SURE (answered by richwmiller)

Hi, I am not sure where to start with this problem. Simplify... (answered by ichudov)

Hello, I need help factoring this problem. Not sure how to really start it off but this... (answered by Edwin P McCravy)