45b-135=99b-9b

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Solution for 45b-135=99b-9b equation:


Simplifying
45b + -135 = 99b + -9b

Reorder the terms:
-135 + 45b = 99b + -9b

Combine like terms: 99b + -9b = 90b
-135 + 45b = 90b

Solving
-135 + 45b = 90b

Solving for variable 'b'.

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

Add '-90b' to each side of the equation.
-135 + 45b + -90b = 90b + -90b

Combine like terms: 45b + -90b = -45b
-135 + -45b = 90b + -90b

Combine like terms: 90b + -90b = 0
-135 + -45b = 0

Add '135' to each side of the equation.
-135 + 135 + -45b = 0 + 135

Combine like terms: -135 + 135 = 0
0 + -45b = 0 + 135
-45b = 0 + 135

Combine like terms: 0 + 135 = 135
-45b = 135

Divide each side by '-45'.
b = -3

Simplifying
b = -3

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