15(b+2)=90(2b-9)-b

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Solution for 15(b+2)=90(2b-9)-b equation:


Simplifying
15(b + 2) = 90(2b + -9) + -1b

Reorder the terms:
15(2 + b) = 90(2b + -9) + -1b
(2 * 15 + b * 15) = 90(2b + -9) + -1b
(30 + 15b) = 90(2b + -9) + -1b

Reorder the terms:
30 + 15b = 90(-9 + 2b) + -1b
30 + 15b = (-9 * 90 + 2b * 90) + -1b
30 + 15b = (-810 + 180b) + -1b

Combine like terms: 180b + -1b = 179b
30 + 15b = -810 + 179b

Solving
30 + 15b = -810 + 179b

Solving for variable 'b'.

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

Add '-179b' to each side of the equation.
30 + 15b + -179b = -810 + 179b + -179b

Combine like terms: 15b + -179b = -164b
30 + -164b = -810 + 179b + -179b

Combine like terms: 179b + -179b = 0
30 + -164b = -810 + 0
30 + -164b = -810

Add '-30' to each side of the equation.
30 + -30 + -164b = -810 + -30

Combine like terms: 30 + -30 = 0
0 + -164b = -810 + -30
-164b = -810 + -30

Combine like terms: -810 + -30 = -840
-164b = -840

Divide each side by '-164'.
b = 5.12195122

Simplifying
b = 5.12195122

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