b+7-3b=15

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


Simplifying
b + 7 + -3b = 15

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

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

Solving
7 + -2b = 15

Solving for variable 'b'.

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

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 = 8
-2b = 8

Divide each side by '-2'.
b = -4

Simplifying
b = -4

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