7(b-1)-5(2b+1)=3

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Solution for 7(b-1)-5(2b+1)=3 equation:


Simplifying
7(b + -1) + -5(2b + 1) = 3

Reorder the terms:
7(-1 + b) + -5(2b + 1) = 3
(-1 * 7 + b * 7) + -5(2b + 1) = 3
(-7 + 7b) + -5(2b + 1) = 3

Reorder the terms:
-7 + 7b + -5(1 + 2b) = 3
-7 + 7b + (1 * -5 + 2b * -5) = 3
-7 + 7b + (-5 + -10b) = 3

Reorder the terms:
-7 + -5 + 7b + -10b = 3

Combine like terms: -7 + -5 = -12
-12 + 7b + -10b = 3

Combine like terms: 7b + -10b = -3b
-12 + -3b = 3

Solving
-12 + -3b = 3

Solving for variable 'b'.

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

Add '12' to each side of the equation.
-12 + 12 + -3b = 3 + 12

Combine like terms: -12 + 12 = 0
0 + -3b = 3 + 12
-3b = 3 + 12

Combine like terms: 3 + 12 = 15
-3b = 15

Divide each side by '-3'.
b = -5

Simplifying
b = -5

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