129=3b

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Solution for 129=3b equation:


Simplifying
129 = 3b

Solving
129 = 3b

Solving for variable 'b'.

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

Add '-3b' to each side of the equation.
129 + -3b = 3b + -3b

Combine like terms: 3b + -3b = 0
129 + -3b = 0

Add '-129' to each side of the equation.
129 + -129 + -3b = 0 + -129

Combine like terms: 129 + -129 = 0
0 + -3b = 0 + -129
-3b = 0 + -129

Combine like terms: 0 + -129 = -129
-3b = -129

Divide each side by '-3'.
b = 43

Simplifying
b = 43

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