Question

Solve the system of equations and enter the solution as an ordered pair.

3x + 4y = 38
5x - 5y = -30

Answer 1

5x-5y=-30
so, dividing both sides by 6:
x-y=-6
x=y-6

Now plug x=y-6 into the first equation.

3(y-6) + 4y = 38

Solve for y.
when you have y, you can find x using:
x=y-6

Answer 2

second eq by 5
x-y=-6
and into 4
4x-4y=-24
now add one and two
7x=14
so x=2
and from second 2-y=--5
y=7