15=3-(b+7)

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Solution for 15=3-(b+7) equation:


Simplifying
15 = 3 + -1(b + 7)

Reorder the terms:
15 = 3 + -1(7 + b)
15 = 3 + (7 * -1 + b * -1)
15 = 3 + (-7 + -1b)

Combine like terms: 3 + -7 = -4
15 = -4 + -1b

Solving
15 = -4 + -1b

Solving for variable 'b'.

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

Add 'b' to each side of the equation.
15 + b = -4 + -1b + b

Combine like terms: -1b + b = 0
15 + b = -4 + 0
15 + b = -4

Add '-15' to each side of the equation.
15 + -15 + b = -4 + -15

Combine like terms: 15 + -15 = 0
0 + b = -4 + -15
b = -4 + -15

Combine like terms: -4 + -15 = -19
b = -19

Simplifying
b = -19

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