Question

4y-4=5+8y

Answer 1

-4 -5 = 8y - 4y
-9 = 4y
-9/4 = y

Answer 2

4y-4y-4=5+8y-4y
-4=5+4y
-4-5=4y
4y=-9
y=-9/4

Answer 3

Check: 4*(-9/4)-4=5+8*(-9/4)
-9-4=5+(-18)
-13=-13 True

Answer 4

2.25

Answer 5

To be correct y=-2.25
You are welcome for the help.

Answer 6

Its actually not negative.

Answer 7

If you plug 2.25 into original equation you will not have true statement.
Correct answer is y=-2.25.