(15b-1)-7(2b+1)=-7

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Solution for (15b-1)-7(2b+1)=-7 equation:


Simplifying
(15b + -1) + -7(2b + 1) = -7

Reorder the terms:
(-1 + 15b) + -7(2b + 1) = -7

Remove parenthesis around (-1 + 15b)
-1 + 15b + -7(2b + 1) = -7

Reorder the terms:
-1 + 15b + -7(1 + 2b) = -7
-1 + 15b + (1 * -7 + 2b * -7) = -7
-1 + 15b + (-7 + -14b) = -7

Reorder the terms:
-1 + -7 + 15b + -14b = -7

Combine like terms: -1 + -7 = -8
-8 + 15b + -14b = -7

Combine like terms: 15b + -14b = 1b
-8 + 1b = -7

Solving
-8 + 1b = -7

Solving for variable 'b'.

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

Add '8' to each side of the equation.
-8 + 8 + 1b = -7 + 8

Combine like terms: -8 + 8 = 0
0 + 1b = -7 + 8
1b = -7 + 8

Combine like terms: -7 + 8 = 1
1b = 1

Divide each side by '1'.
b = 1

Simplifying
b = 1

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