b+9=-20

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Solution for b+9=-20 equation: 


Simplifying
b + 9 = -20

Reorder the terms:
9 + b = -20

Solving
9 + b = -20

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 + b = -20 + -9

Combine like terms: 9 + -9 = 0
0 + b = -20 + -9
b = -20 + -9

Combine like terms: -20 + -9 = -29
b = -29

Simplifying
b = -29

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