30b-75=45

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Solution for 30b-75=45 equation: 


Simplifying
30b + -75 = 45

Reorder the terms:
-75 + 30b = 45

Solving
-75 + 30b = 45

Solving for variable 'b'.

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

Add '75' to each side of the equation.
-75 + 75 + 30b = 45 + 75

Combine like terms: -75 + 75 = 0
0 + 30b = 45 + 75
30b = 45 + 75

Combine like terms: 45 + 75 = 120
30b = 120

Divide each side by '30'.
b = 4

Simplifying
b = 4

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