90=b+45

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Solution for 90=b+45 equation:


Simplifying
90 = b + 45

Reorder the terms:
90 = 45 + b

Solving
90 = 45 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
90 + -1b = 45 + b + -1b

Combine like terms: b + -1b = 0
90 + -1b = 45 + 0
90 + -1b = 45

Add '-90' to each side of the equation.
90 + -90 + -1b = 45 + -90

Combine like terms: 90 + -90 = 0
0 + -1b = 45 + -90
-1b = 45 + -90

Combine like terms: 45 + -90 = -45
-1b = -45

Divide each side by '-1'.
b = 45

Simplifying
b = 45

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