solve the equation for y

Question

4y+5x= -7

I came up with this is, is it right?

y=-5x/4+4

Answer 1

x+15=85

Answer 2

x + 15 = 85

- 15 -15 (subtract 15 from both sides of equation to get x alone and keep equation equal.)
x=70

Answer 3

4y + 5x = -7
divide everything by 4 to get y alone
4y/4 + 5x/4 = -7/4
y + 5x/4 = -7/4
subtract 5x/4 from both sides of equation
y +5x/4 = -7/4
-5x/4 -5x-4
________________
y = -5x -7 / 4

-5x - 7
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4