20=5b-(100+3b)

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Solution for 20=5b-(100+3b) equation:


Simplifying
20 = 5b + -1(100 + 3b)
20 = 5b + (100 * -1 + 3b * -1)
20 = 5b + (-100 + -3b)

Reorder the terms:
20 = -100 + 5b + -3b

Combine like terms: 5b + -3b = 2b
20 = -100 + 2b

Solving
20 = -100 + 2b

Solving for variable 'b'.

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

Add '-2b' to each side of the equation.
20 + -2b = -100 + 2b + -2b

Combine like terms: 2b + -2b = 0
20 + -2b = -100 + 0
20 + -2b = -100

Add '-20' to each side of the equation.
20 + -20 + -2b = -100 + -20

Combine like terms: 20 + -20 = 0
0 + -2b = -100 + -20
-2b = -100 + -20

Combine like terms: -100 + -20 = -120
-2b = -120

Divide each side by '-2'.
b = 60

Simplifying
b = 60

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