7b=9(20-b)

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Solution for 7b=9(20-b) equation: 


Simplifying
7b = 9(20 + -1b)
7b = (20 * 9 + -1b * 9)
7b = (180 + -9b)

Solving
7b = 180 + -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.
7b + 9b = 180 + -9b + 9b

Combine like terms: 7b + 9b = 16b
16b = 180 + -9b + 9b

Combine like terms: -9b + 9b = 0
16b = 180 + 0
16b = 180

Divide each side by '16'.
b = 11.25

Simplifying
b = 11.25

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