8b-4(b-2)=42

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Solution for 8b-4(b-2)=42 equation:


Simplifying
8b + -4(b + -2) = 42

Reorder the terms:
8b + -4(-2 + b) = 42
8b + (-2 * -4 + b * -4) = 42
8b + (8 + -4b) = 42

Reorder the terms:
8 + 8b + -4b = 42

Combine like terms: 8b + -4b = 4b
8 + 4b = 42

Solving
8 + 4b = 42

Solving for variable 'b'.

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

Add '-8' to each side of the equation.
8 + -8 + 4b = 42 + -8

Combine like terms: 8 + -8 = 0
0 + 4b = 42 + -8
4b = 42 + -8

Combine like terms: 42 + -8 = 34
4b = 34

Divide each side by '4'.
b = 8.5

Simplifying
b = 8.5

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