30=12+3b

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Solution for 30=12+3b equation:


Simplifying
30 = 12 + 3b

Solving
30 = 12 + 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.
30 + -3b = 12 + 3b + -3b

Combine like terms: 3b + -3b = 0
30 + -3b = 12 + 0
30 + -3b = 12

Add '-30' to each side of the equation.
30 + -30 + -3b = 12 + -30

Combine like terms: 30 + -30 = 0
0 + -3b = 12 + -30
-3b = 12 + -30

Combine like terms: 12 + -30 = -18
-3b = -18

Divide each side by '-3'.
b = 6

Simplifying
b = 6

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