100=0.5(4+b)20

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Solution for 100=0.5(4+b)20 equation:


Simplifying
100 = 0.5(4 + b) * 20

Reorder the terms for easier multiplication:
100 = 0.5 * 20(4 + b)

Multiply 0.5 * 20
100 = 10(4 + b)
100 = (4 * 10 + b * 10)
100 = (40 + 10b)

Solving
100 = 40 + 10b

Solving for variable 'b'.

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

Add '-10b' to each side of the equation.
100 + -10b = 40 + 10b + -10b

Combine like terms: 10b + -10b = 0
100 + -10b = 40 + 0
100 + -10b = 40

Add '-100' to each side of the equation.
100 + -100 + -10b = 40 + -100

Combine like terms: 100 + -100 = 0
0 + -10b = 40 + -100
-10b = 40 + -100

Combine like terms: 40 + -100 = -60
-10b = -60

Divide each side by '-10'.
b = 6

Simplifying
b = 6

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