30=5b-15

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Solution for 30=5b-15 equation:


Simplifying
30 = 5b + -15

Reorder the terms:
30 = -15 + 5b

Solving
30 = -15 + 5b

Solving for variable 'b'.

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

Add '-5b' to each side of the equation.
30 + -5b = -15 + 5b + -5b

Combine like terms: 5b + -5b = 0
30 + -5b = -15 + 0
30 + -5b = -15

Add '-30' to each side of the equation.
30 + -30 + -5b = -15 + -30

Combine like terms: 30 + -30 = 0
0 + -5b = -15 + -30
-5b = -15 + -30

Combine like terms: -15 + -30 = -45
-5b = -45

Divide each side by '-5'.
b = 9

Simplifying
b = 9

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