9(4b-1)=72

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Solution for 9(4b-1)=72 equation: 


Simplifying
9(4b + -1) = 72

Reorder the terms:
9(-1 + 4b) = 72
(-1 * 9 + 4b * 9) = 72
(-9 + 36b) = 72

Solving
-9 + 36b = 72

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 + 36b = 72 + 9

Combine like terms: -9 + 9 = 0
0 + 36b = 72 + 9
36b = 72 + 9

Combine like terms: 72 + 9 = 81
36b = 81

Divide each side by '36'.
b = 2.25

Simplifying
b = 2.25

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