How do you solve the system of equations 8y - 5x = 79 and 5y = 4x + 45?

1 Answer
May 6, 2018

The answer y=13
x=5

Explanation:

show below

8y - 5x = 79........(1)

5y = 4x + 45............(2)

hit the (2) by 8

5(8y)=32x+360.....(3)

rewrite (1) in the form

8y=79+5x......(4)

now put 4 in 3

5(79+5x)=32x+360

395+25x=32x+360

7x=35

x=5

8y=79+25

8y=104

y=13