Question

What is the solution to the following system of equations?
8x - 10y = -24
-8x + 6y = 40

Answer 1

@campbell_st

Answer 2

add the two equations simultaneously and you'll get -4y = 16. solve for y

Answer 3

^8x cancels out there

Answer 4

And the answer is...........

Answer 5

Solve by elimination. The x terms can cancel immediately this way.
8x - 10y = -24
-8x + 6y = 40
-4y = 16
y = -16/4
If you want, you can also solve using substitution, but this is easier.

Answer 6

Btw, you have to divide -16/4

Answer 7

THen you plug it back in to solve for x and there is your solution set.

Answer 8

You mean plug it back into y?

Answer 9

Yeah. Plug what you got for y and put it in for y in one of the equations.
8x - 10(Put in value here) = -24
and solve for x.

Answer 10

so x=-8 and y=-4?

Answer 11

Yup :)

Answer 12

Another way to write the solution is (-8, -4)