20(b+4)-(9+b)=-2

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Solution for 20(b+4)-(9+b)=-2 equation:


Simplifying
20(b + 4) + -1(9 + b) = -2

Reorder the terms:
20(4 + b) + -1(9 + b) = -2
(4 * 20 + b * 20) + -1(9 + b) = -2
(80 + 20b) + -1(9 + b) = -2
80 + 20b + (9 * -1 + b * -1) = -2
80 + 20b + (-9 + -1b) = -2

Reorder the terms:
80 + -9 + 20b + -1b = -2

Combine like terms: 80 + -9 = 71
71 + 20b + -1b = -2

Combine like terms: 20b + -1b = 19b
71 + 19b = -2

Solving
71 + 19b = -2

Solving for variable 'b'.

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

Add '-71' to each side of the equation.
71 + -71 + 19b = -2 + -71

Combine like terms: 71 + -71 = 0
0 + 19b = -2 + -71
19b = -2 + -71

Combine like terms: -2 + -71 = -73
19b = -73

Divide each side by '19'.
b = -3.842105263

Simplifying
b = -3.842105263

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