7r – 7 = 2r + 18

To solve the equation, you need to isolate the variable on one side of the equation.

First, start by adding 7 to both sides of the equation to get rid of the -7 on the left side:

7r - 7 + 7 = 2r + 18 + 7

Simplifying the equation:

7r = 2r + 25

Next, subtract 2r from both sides to move all the terms with r to one side:

7r - 2r = 2r - 2r + 25

Simplifying the equation:

5r = 25

Finally, divide both sides of the equation by 5 to solve for r:

5r/5 = 25/5

Simplifying the equation:

r = 5