-b-3b=4

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Solution for -b-3b=4 equation: 


Simplifying
-1b + -3b = 4

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

Solving
-4b = 4

Solving for variable 'b'.

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

Divide each side by '-4'.
b = -1

Simplifying
b = -1

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