-3(7b-7)-6=120

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Solution for -3(7b-7)-6=120 equation: 


Simplifying
-3(7b + -7) + -6 = 120

Reorder the terms:
-3(-7 + 7b) + -6 = 120
(-7 * -3 + 7b * -3) + -6 = 120
(21 + -21b) + -6 = 120

Reorder the terms:
21 + -6 + -21b = 120

Combine like terms: 21 + -6 = 15
15 + -21b = 120

Solving
15 + -21b = 120

Solving for variable 'b'.

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

Add '-15' to each side of the equation.
15 + -15 + -21b = 120 + -15

Combine like terms: 15 + -15 = 0
0 + -21b = 120 + -15
-21b = 120 + -15

Combine like terms: 120 + -15 = 105
-21b = 105

Divide each side by '-21'.
b = -5

Simplifying
b = -5

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