b-7-3b=7

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


Simplifying
b + -7 + -3b = 7

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

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

Solving
-7 + -2b = 7

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 = 7 + 7

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

Combine like terms: 7 + 7 = 14
-2b = 14

Divide each side by '-2'.
b = -7

Simplifying
b = -7

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