Question

Need a little help
Solve the system using elimination
3x + 5y = −18
4x − 10y = −24

Answer 1

3x+5y=-18 call this equation 1
4x-10y=-24 call this equation 2

This is quite easy, let's just multiply equation 1 through by 2.
6x + 10y = -36 now let's add this to equation 2
4x-10y=-24
10x = -60
divide by 10
x = -6
now substitute back to get y.

4x-10y=-24
4(-6) -10y = -24
-24 -10y = -24
-10y = -24+24
-10y = 0
y=0
=)

Answer 2

Oh thanks I was confused on whether or not to multiply by 2 or not!!

Answer 3

You're welcome! ^_^