Question

27. Solve the equation.

Answer 1

r= -56

Explanation:

The equation given is:

`(r)/(7)= -8`

We want to solve for r. In order to do this, we must get r by itself.

Currently, r is being divided by 7. We want to perform the inverse, which is multiplication. Therefore, we should multiply both sides of the equation by 7.

`7*(r)/(7)= -8 * 7`

`r=-8*7`

`r= -56`

Let's check our solution. Substitute -56 back in for r and solve.

`(r)/(7)= -8`

`(-56)/(7)= -8`

`-8=-8`

Both sides of the equation are the same, so we know our answer is correct.

Answer 2

Answer: r=-56

Explanation:

multiply 7 on both sides

`(7r)/(7)=7\left(-8\right)`

7*-8=-56

7 and 7 is eliminated

so x=-56