b+7=-9-b

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Solution for b+7=-9-b equation:


Simplifying
b + 7 = -9 + -1b

Reorder the terms:
7 + b = -9 + -1b

Solving
7 + b = -9 + -1b

Solving for variable 'b'.

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

Add 'b' to each side of the equation.
7 + b + b = -9 + -1b + b

Combine like terms: b + b = 2b
7 + 2b = -9 + -1b + b

Combine like terms: -1b + b = 0
7 + 2b = -9 + 0
7 + 2b = -9

Add '-7' to each side of the equation.
7 + -7 + 2b = -9 + -7

Combine like terms: 7 + -7 = 0
0 + 2b = -9 + -7
2b = -9 + -7

Combine like terms: -9 + -7 = -16
2b = -16

Divide each side by '2'.
b = -8

Simplifying
b = -8

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