3(7r-7)=-6+6

Solution for 3(7r-7)=-6+6 equation:

Simplifying
3(7r + -7) = -6 + 6

Reorder the terms:
3(-7 + 7r) = -6 + 6
(-7 * 3 + 7r * 3) = -6 + 6
(-21 + 21r) = -6 + 6

Combine like terms: -6 + 6 = 0
-21 + 21r = 0

Solving
-21 + 21r = 0

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '21' to each side of the equation.
-21 + 21 + 21r = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 21r = 0 + 21
21r = 0 + 21

Combine like terms: 0 + 21 = 21
21r = 21

Divide each side by '21'.
r = 1

Simplifying
r = 1