-3(7r+2)=141

Solution for -3(7r+2)=141 equation:

Simplifying
-3(7r + 2) = 141

Reorder the terms:
-3(2 + 7r) = 141
(2 * -3 + 7r * -3) = 141
(-6 + -21r) = 141

Solving
-6 + -21r = 141

Solving for variable 'r'.

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

Add '6' to each side of the equation.
-6 + 6 + -21r = 141 + 6

Combine like terms: -6 + 6 = 0
0 + -21r = 141 + 6
-21r = 141 + 6

Combine like terms: 141 + 6 = 147
-21r = 147

Divide each side by '-21'.
r = -7

Simplifying
r = -7