Question

Solve the equation for y.

4x – 5y = 9

Answer 1

solve the equation then.
get y isolated.

Answer 2

Subtract 4x from both sides (step 1). Then divide both sides by -5 (step 4) to fully isolate y


\[\Large 4x - 5y = 9\]


\[\Large -5y = 9-4x\]


\[\Large -5y = -4x+9\]


\[\Large y = \frac{-4x+9}{-5}\]


\[\Large y = \frac{-4x}{-5}+\frac{9}{-5}\]


\[\Large y = \frac{4}{5}x-\frac{9}{5}\]

Answer 3

thanks jim c:

Answer 4

yw

Answer 5

1. Add 4x to both sides ( -5y = 4x + 9)
2. Divide both sides by -5 ( y = -4/5x - 9/5)

Whatever you do to one side of the equation you have to do to the other side to keep it balanced. Most algebra equations work like this.