7b+7(3b-2)=42

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Solution for 7b+7(3b-2)=42 equation:


Simplifying
7b + 7(3b + -2) = 42

Reorder the terms:
7b + 7(-2 + 3b) = 42
7b + (-2 * 7 + 3b * 7) = 42
7b + (-14 + 21b) = 42

Reorder the terms:
-14 + 7b + 21b = 42

Combine like terms: 7b + 21b = 28b
-14 + 28b = 42

Solving
-14 + 28b = 42

Solving for variable 'b'.

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

Add '14' to each side of the equation.
-14 + 14 + 28b = 42 + 14

Combine like terms: -14 + 14 = 0
0 + 28b = 42 + 14
28b = 42 + 14

Combine like terms: 42 + 14 = 56
28b = 56

Divide each side by '28'.
b = 2

Simplifying
b = 2

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