Question

Solve the equation using subtracting or addition.
-7y = 28

Answer 1

y = -4

Explanation:

This is a weird question. It depends on what they mean by 'solve' If you're trying to isolate the variable, which is typically what they mean when they say solve, then it can only be done through division, not addition and subtraction.

It would be like this:

`(-7y)/(-7) = (28)/(-7)\\y = -4`

If perhaps they want you to get everything on one side of the equation you could just add 7y to both sides and end up with:

7y + 28 = 0

But that doesn't really do anything useful.

Hope this helps

Answer 2

-4

Explanation:

-7y = 28

divide both sides by 7 to make y the subject of the formula

-y = 28/7

-y = 4

therefore

y= -4