7r=-63
To solve the equation 7r = -63, you need to isolate the variable r on one side of the equation.
You can do this by dividing both sides of the equation by 7:
7r ÷ 7 = -63 ÷ 7
Simplifying:
r = -9
Therefore, the solution to the equation 7r = -63 is r = -9.