Question

How do you solve `-8m+15=9`?

Answer 1

See the solution process below:

Explanation:

Step 1) Subtract `color(red)(15)` from each side of the equation to isolate the `m` term while keeping the equation balanced:

`-8m + 15 - color(red)(15) = 9 - color(red)(15)`

`-8m + 0 = -6`

`-8m = -6`

Step 2) Divide each side of the equation by `color(red)(-8)` to solve for `m` while keeping the equation balanced:

`(-8m)/color(red)(-8) = (-6)/color(red)(-8)`

`(color(red)(cancel(color(black)(-8)))m)/cancel(color(red)(-8)) = (-2 xx 3)/color(red)(-2 xx 4)`

`m = (color(red)(cancel(color(black)(-2))) xx 3)/color(red)(color(black)(cancel(color(red)(-2))) xx 4)`

`m = 3/4`