2b-90=

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Solution for 2b-90= equation: 


Simplifying
2b + -90 = 0

Reorder the terms:
-90 + 2b = 0

Solving
-90 + 2b = 0

Solving for variable 'b'.

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

Add '90' to each side of the equation.
-90 + 90 + 2b = 0 + 90

Combine like terms: -90 + 90 = 0
0 + 2b = 0 + 90
2b = 0 + 90

Combine like terms: 0 + 90 = 90
2b = 90

Divide each side by '2'.
b = 45

Simplifying
b = 45

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