12b-30=20b-70

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Solution for 12b-30=20b-70 equation:


Simplifying
12b + -30 = 20b + -70

Reorder the terms:
-30 + 12b = 20b + -70

Reorder the terms:
-30 + 12b = -70 + 20b

Solving
-30 + 12b = -70 + 20b

Solving for variable 'b'.

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

Add '-20b' to each side of the equation.
-30 + 12b + -20b = -70 + 20b + -20b

Combine like terms: 12b + -20b = -8b
-30 + -8b = -70 + 20b + -20b

Combine like terms: 20b + -20b = 0
-30 + -8b = -70 + 0
-30 + -8b = -70

Add '30' to each side of the equation.
-30 + 30 + -8b = -70 + 30

Combine like terms: -30 + 30 = 0
0 + -8b = -70 + 30
-8b = -70 + 30

Combine like terms: -70 + 30 = -40
-8b = -40

Divide each side by '-8'.
b = 5

Simplifying
b = 5

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