b+-2b+-4=

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Solution for b+-2b+-4= equation: 


Simplifying
b + -2b + -4 = 0

Reorder the terms:
-4 + b + -2b = 0

Combine like terms: b + -2b = -1b
-4 + -1b = 0

Solving
-4 + -1b = 0

Solving for variable 'b'.

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

Add '4' to each side of the equation.
-4 + 4 + -1b = 0 + 4

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

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

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

Simplifying
b = -4

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