To solve the equation r - 7 = 1 for the value of r, you need to isolate the variable r on one side of the equation. In this case, you can add 7 to both sides of the equation to get:
r - 7 + 7 = 1 + 7
This simplifies to:
r = 8
Therefore, the number that should be added to both sides of the equation is 7.
What number should be added to both sides to solve the equation r - 7 = 1 to solve for the value of r?
1 answer