[4b]-3=9

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Solution for [4b]-3=9 equation: 


Simplifying
[4b] + -3 = 9

Reorder the terms:
-3 + [4b] = 9

Solving
-3 + [4b] = 9

Solving for variable 'b'.

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

Add '3' to each side of the equation.
-3 + 3 + [4b] = 9 + 3

Combine like terms: -3 + 3 = 0
0 + [4b] = 9 + 3
[4b] = 9 + 3

Combine like terms: 9 + 3 = 12
[4b] = 12

Divide each side by '4'.
b = 3

Simplifying
b = 3

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