Solve the equation.

Question

-4(r+5) = -78

Answer 1

To solve the equation, we will begin by distributing the -4 to the terms inside the parentheses:

-4(r+5) = -78
-4 * r + (-4) * 5 = -78
-4r - 20 = -78

Next, we will isolate the variable on one side of the equation. To do this, we will add 20 to both sides of the equation:

-4r - 20 + 20 = -78 + 20
-4r = -58

Finally, we will solve for r by dividing both sides of the equation by -4:

(-4r)/-4 = -58/-4
r = 14.5

Therefore, the solution to the equation is r = 14.5.