-5b+7=42

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Solution for -5b+7=42 equation: 


Simplifying
-5b + 7 = 42

Reorder the terms:
7 + -5b = 42

Solving
7 + -5b = 42

Solving for variable 'b'.

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

Add '-7' to each side of the equation.
7 + -7 + -5b = 42 + -7

Combine like terms: 7 + -7 = 0
0 + -5b = 42 + -7
-5b = 42 + -7

Combine like terms: 42 + -7 = 35
-5b = 35

Divide each side by '-5'.
b = -7

Simplifying
b = -7

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