2b+7+5b=42

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Solution for 2b+7+5b=42 equation: 


Simplifying
2b + 7 + 5b = 42

Reorder the terms:
7 + 2b + 5b = 42

Combine like terms: 2b + 5b = 7b
7 + 7b = 42

Solving
7 + 7b = 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 + 7b = 42 + -7

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

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

Divide each side by '7'.
b = 5

Simplifying
b = 5

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