15-4b=-9(3b+8)

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Solution for 15-4b=-9(3b+8) equation:


Simplifying
15 + -4b = -9(3b + 8)

Reorder the terms:
15 + -4b = -9(8 + 3b)
15 + -4b = (8 * -9 + 3b * -9)
15 + -4b = (-72 + -27b)

Solving
15 + -4b = -72 + -27b

Solving for variable 'b'.

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

Add '27b' to each side of the equation.
15 + -4b + 27b = -72 + -27b + 27b

Combine like terms: -4b + 27b = 23b
15 + 23b = -72 + -27b + 27b

Combine like terms: -27b + 27b = 0
15 + 23b = -72 + 0
15 + 23b = -72

Add '-15' to each side of the equation.
15 + -15 + 23b = -72 + -15

Combine like terms: 15 + -15 = 0
0 + 23b = -72 + -15
23b = -72 + -15

Combine like terms: -72 + -15 = -87
23b = -87

Divide each side by '23'.
b = -3.782608696

Simplifying
b = -3.782608696

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