-0.50(b-4)=12

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Solution for -0.50(b-4)=12 equation:


Simplifying
-0.50(b + -4) = 12

Reorder the terms:
-0.50(-4 + b) = 12
(-4 * -0.50 + b * -0.50) = 12
(2 + -0.50b) = 12

Solving
2 + -0.50b = 12

Solving for variable 'b'.

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

Add '-2' to each side of the equation.
2 + -2 + -0.50b = 12 + -2

Combine like terms: 2 + -2 = 0
0 + -0.50b = 12 + -2
-0.50b = 12 + -2

Combine like terms: 12 + -2 = 10
-0.50b = 10

Divide each side by '-0.50'.
b = -20

Simplifying
b = -20

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