3b+7=b-15

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


Simplifying
3b + 7 = b + -15

Reorder the terms:
7 + 3b = b + -15

Reorder the terms:
7 + 3b = -15 + b

Solving
7 + 3b = -15 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
7 + 3b + -1b = -15 + b + -1b

Combine like terms: 3b + -1b = 2b
7 + 2b = -15 + b + -1b

Combine like terms: b + -1b = 0
7 + 2b = -15 + 0
7 + 2b = -15

Add '-7' to each side of the equation.
7 + -7 + 2b = -15 + -7

Combine like terms: 7 + -7 = 0
0 + 2b = -15 + -7
2b = -15 + -7

Combine like terms: -15 + -7 = -22
2b = -22

Divide each side by '2'.
b = -11

Simplifying
b = -11

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