-5(16b-20)=9b+9(-12b+9)

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Solution for -5(16b-20)=9b+9(-12b+9) equation:


Simplifying
-5(16b + -20) = 9b + 9(-12b + 9)

Reorder the terms:
-5(-20 + 16b) = 9b + 9(-12b + 9)
(-20 * -5 + 16b * -5) = 9b + 9(-12b + 9)
(100 + -80b) = 9b + 9(-12b + 9)

Reorder the terms:
100 + -80b = 9b + 9(9 + -12b)
100 + -80b = 9b + (9 * 9 + -12b * 9)
100 + -80b = 9b + (81 + -108b)

Reorder the terms:
100 + -80b = 81 + 9b + -108b

Combine like terms: 9b + -108b = -99b
100 + -80b = 81 + -99b

Solving
100 + -80b = 81 + -99b

Solving for variable 'b'.

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

Add '99b' to each side of the equation.
100 + -80b + 99b = 81 + -99b + 99b

Combine like terms: -80b + 99b = 19b
100 + 19b = 81 + -99b + 99b

Combine like terms: -99b + 99b = 0
100 + 19b = 81 + 0
100 + 19b = 81

Add '-100' to each side of the equation.
100 + -100 + 19b = 81 + -100

Combine like terms: 100 + -100 = 0
0 + 19b = 81 + -100
19b = 81 + -100

Combine like terms: 81 + -100 = -19
19b = -19

Divide each side by '19'.
b = -1

Simplifying
b = -1

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