X=-4

-7x + 5y = 13

what is Y?

3

Step-by-step explanation:

This is how you will do:

-7x (-7x-4) + 5y=13

=28+5y=13

Pass 13to the other side across the mark, that will change the sign to make it negative (28-13=5y)

15=5y divide all sides by 5 to leave the answer as 3=y

-7x + 5y = 13

-7 (-4) + 5y = 13

28 + 5y = 13

5y = 13 - 28

5y = - 15

y = - 15/5

y = - 3