-7(5b-3)=126

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Solution for -7(5b-3)=126 equation:


Simplifying
-7(5b + -3) = 126

Reorder the terms:
-7(-3 + 5b) = 126
(-3 * -7 + 5b * -7) = 126
(21 + -35b) = 126

Solving
21 + -35b = 126

Solving for variable 'b'.

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

Add '-21' to each side of the equation.
21 + -21 + -35b = 126 + -21

Combine like terms: 21 + -21 = 0
0 + -35b = 126 + -21
-35b = 126 + -21

Combine like terms: 126 + -21 = 105
-35b = 105

Divide each side by '-35'.
b = -3

Simplifying
b = -3

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