Question

10x - 8y = 40

5x - 2y = 40
What is the value of y in the (x, y) solution to the
system of equations shown above?

Answer 1

Explanation:

10x-8y = 40 (1)

5x-2y= 40 (2)

multiply (2) by -2 then add to (1) to get rid of x

-10x+4y+10x-8y = 40+ (-80)

-4y = -40

4y = 40

y= 40/4

y = 10

the answer is 10

Answer 2

Answer: 10

Explanation: