-105=7(3b-1)-7b

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Solution for -105=7(3b-1)-7b equation:


Simplifying
-105 = 7(3b + -1) + -7b

Reorder the terms:
-105 = 7(-1 + 3b) + -7b
-105 = (-1 * 7 + 3b * 7) + -7b
-105 = (-7 + 21b) + -7b

Combine like terms: 21b + -7b = 14b
-105 = -7 + 14b

Solving
-105 = -7 + 14b

Solving for variable 'b'.

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

Add '-14b' to each side of the equation.
-105 + -14b = -7 + 14b + -14b

Combine like terms: 14b + -14b = 0
-105 + -14b = -7 + 0
-105 + -14b = -7

Add '105' to each side of the equation.
-105 + 105 + -14b = -7 + 105

Combine like terms: -105 + 105 = 0
0 + -14b = -7 + 105
-14b = -7 + 105

Combine like terms: -7 + 105 = 98
-14b = 98

Divide each side by '-14'.
b = -7

Simplifying
b = -7

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