4b+5b=90

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Solution for 4b+5b=90 equation: 


Simplifying
4b + 5b = 90

Combine like terms: 4b + 5b = 9b
9b = 90

Solving
9b = 90

Solving for variable 'b'.

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

Divide each side by '9'.
b = 10

Simplifying
b = 10

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