3.2=0.8*(b-3)

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Solution for 3.2=0.8*(b-3) equation:


Simplifying
3.2 = 0.8(b + -3)

Reorder the terms:
3.2 = 0.8(-3 + b)
3.2 = (-3 * 0.8 + b * 0.8)
3.2 = (-2.4 + 0.8b)

Solving
3.2 = -2.4 + 0.8b

Solving for variable 'b'.

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

Add '-0.8b' to each side of the equation.
3.2 + -0.8b = -2.4 + 0.8b + -0.8b

Combine like terms: 0.8b + -0.8b = 0.0
3.2 + -0.8b = -2.4 + 0.0
3.2 + -0.8b = -2.4

Add '-3.2' to each side of the equation.
3.2 + -3.2 + -0.8b = -2.4 + -3.2

Combine like terms: 3.2 + -3.2 = 0.0
0.0 + -0.8b = -2.4 + -3.2
-0.8b = -2.4 + -3.2

Combine like terms: -2.4 + -3.2 = -5.6
-0.8b = -5.6

Divide each side by '-0.8'.
b = 7

Simplifying
b = 7

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