9b+15=-3b-9

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Solution for 9b+15=-3b-9 equation:


Simplifying
9b + 15 = -3b + -9

Reorder the terms:
15 + 9b = -3b + -9

Reorder the terms:
15 + 9b = -9 + -3b

Solving
15 + 9b = -9 + -3b

Solving for variable 'b'.

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

Add '3b' to each side of the equation.
15 + 9b + 3b = -9 + -3b + 3b

Combine like terms: 9b + 3b = 12b
15 + 12b = -9 + -3b + 3b

Combine like terms: -3b + 3b = 0
15 + 12b = -9 + 0
15 + 12b = -9

Add '-15' to each side of the equation.
15 + -15 + 12b = -9 + -15

Combine like terms: 15 + -15 = 0
0 + 12b = -9 + -15
12b = -9 + -15

Combine like terms: -9 + -15 = -24
12b = -24

Divide each side by '12'.
b = -2

Simplifying
b = -2

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