0.25(b-30)=15

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Solution for 0.25(b-30)=15 equation:


Simplifying
0.25(b + -30) = 15

Reorder the terms:
0.25(-30 + b) = 15
(-30 * 0.25 + b * 0.25) = 15
(-7.5 + 0.25b) = 15

Solving
-7.5 + 0.25b = 15

Solving for variable 'b'.

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

Add '7.5' to each side of the equation.
-7.5 + 7.5 + 0.25b = 15 + 7.5

Combine like terms: -7.5 + 7.5 = 0.0
0.0 + 0.25b = 15 + 7.5
0.25b = 15 + 7.5

Combine like terms: 15 + 7.5 = 22.5
0.25b = 22.5

Divide each side by '0.25'.
b = 90

Simplifying
b = 90

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