Question

-7x+3y=30 find the value of y whenx is 0

Answer 1

0 + 3y = 30
3y = 30
y = 10

Answer 2

Substitute 0 to x

-7(0)+3y = 30

0 + 3y = 30

Of course, solve for y now

3y = 30

Since the y is multiplied for 3, divide both terms for 3

3y/3 = 30/3

y = 10