4b=9b-40

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Solution for 4b=9b-40 equation: 


Simplifying
4b = 9b + -40

Reorder the terms:
4b = -40 + 9b

Solving
4b = -40 + 9b

Solving for variable 'b'.

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

Add '-9b' to each side of the equation.
4b + -9b = -40 + 9b + -9b

Combine like terms: 4b + -9b = -5b
-5b = -40 + 9b + -9b

Combine like terms: 9b + -9b = 0
-5b = -40 + 0
-5b = -40

Divide each side by '-5'.
b = 8

Simplifying
b = 8

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