-9b+27=72

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Solution for -9b+27=72 equation: 


Simplifying
-9b + 27 = 72

Reorder the terms:
27 + -9b = 72

Solving
27 + -9b = 72

Solving for variable 'b'.

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

Add '-27' to each side of the equation.
27 + -27 + -9b = 72 + -27

Combine like terms: 27 + -27 = 0
0 + -9b = 72 + -27
-9b = 72 + -27

Combine like terms: 72 + -27 = 45
-9b = 45

Divide each side by '-9'.
b = -5

Simplifying
b = -5

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