12+-3b=30

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Solution for 12+-3b=30 equation: 


Simplifying
12 + -3b = 30

Solving
12 + -3b = 30

Solving for variable 'b'.

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

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

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

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

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

Simplifying
b = -6

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