Question

2x+y=4
3x-2y=-15, solve by substitution. can someone show me step by step how to work this please

Answer 1

Sure :)
start by solving the first equation for y:
2x+y=4
-2x -2x
y=4-2x

Then substitute this into the second equation:
3x-2y=-15
3x-2(4-2x)=-15

Now solve for x:
3x-8--4x=-15
3x-8+4x=-15
7x-8=-15
7x=-7
x=-1

Now substitute this into y=4-2x to find y:
y=4-2(-1)
y=4--2
y=4+2
y=6

so x=-1 and y=6

Hope this helped!

Answer 2

awh! thank you so much! :)

Answer 3

You're welcome!