7(2b+2)-3(2-2b)=-72

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Solution for 7(2b+2)-3(2-2b)=-72 equation:


Simplifying
7(2b + 2) + -3(2 + -2b) = -72

Reorder the terms:
7(2 + 2b) + -3(2 + -2b) = -72
(2 * 7 + 2b * 7) + -3(2 + -2b) = -72
(14 + 14b) + -3(2 + -2b) = -72
14 + 14b + (2 * -3 + -2b * -3) = -72
14 + 14b + (-6 + 6b) = -72

Reorder the terms:
14 + -6 + 14b + 6b = -72

Combine like terms: 14 + -6 = 8
8 + 14b + 6b = -72

Combine like terms: 14b + 6b = 20b
8 + 20b = -72

Solving
8 + 20b = -72

Solving for variable 'b'.

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

Add '-8' to each side of the equation.
8 + -8 + 20b = -72 + -8

Combine like terms: 8 + -8 = 0
0 + 20b = -72 + -8
20b = -72 + -8

Combine like terms: -72 + -8 = -80
20b = -80

Divide each side by '20'.
b = -4

Simplifying
b = -4

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