7b+9=-138

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Solution for 7b+9=-138 equation: 


Simplifying
7b + 9 = -138

Reorder the terms:
9 + 7b = -138

Solving
9 + 7b = -138

Solving for variable 'b'.

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

Add '-9' to each side of the equation.
9 + -9 + 7b = -138 + -9

Combine like terms: 9 + -9 = 0
0 + 7b = -138 + -9
7b = -138 + -9

Combine like terms: -138 + -9 = -147
7b = -147

Divide each side by '7'.
b = -21

Simplifying
b = -21

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