45=.20(200)+b

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Solution for 45=.20(200)+b equation:


Simplifying
45 = 0.20(200) + b

Multiply 0.20 * 200
45 = 40 + b

Solving
45 = 40 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
45 + -1b = 40 + b + -1b

Combine like terms: b + -1b = 0
45 + -1b = 40 + 0
45 + -1b = 40

Add '-45' to each side of the equation.
45 + -45 + -1b = 40 + -45

Combine like terms: 45 + -45 = 0
0 + -1b = 40 + -45
-1b = 40 + -45

Combine like terms: 40 + -45 = -5
-1b = -5

Divide each side by '-1'.
b = 5

Simplifying
b = 5

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