-72=3b+6(b-3)

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Solution for -72=3b+6(b-3) equation:


Simplifying
-72 = 3b + 6(b + -3)

Reorder the terms:
-72 = 3b + 6(-3 + b)
-72 = 3b + (-3 * 6 + b * 6)
-72 = 3b + (-18 + 6b)

Reorder the terms:
-72 = -18 + 3b + 6b

Combine like terms: 3b + 6b = 9b
-72 = -18 + 9b

Solving
-72 = -18 + 9b

Solving for variable 'b'.

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

Add '-9b' to each side of the equation.
-72 + -9b = -18 + 9b + -9b

Combine like terms: 9b + -9b = 0
-72 + -9b = -18 + 0
-72 + -9b = -18

Add '72' to each side of the equation.
-72 + 72 + -9b = -18 + 72

Combine like terms: -72 + 72 = 0
0 + -9b = -18 + 72
-9b = -18 + 72

Combine like terms: -18 + 72 = 54
-9b = 54

Divide each side by '-9'.
b = -6

Simplifying
b = -6

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