-2b+4=b+91

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Solution for -2b+4=b+91 equation:


Simplifying
-2b + 4 = b + 91

Reorder the terms:
4 + -2b = b + 91

Reorder the terms:
4 + -2b = 91 + b

Solving
4 + -2b = 91 + 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.
4 + -2b + -1b = 91 + b + -1b

Combine like terms: -2b + -1b = -3b
4 + -3b = 91 + b + -1b

Combine like terms: b + -1b = 0
4 + -3b = 91 + 0
4 + -3b = 91

Add '-4' to each side of the equation.
4 + -4 + -3b = 91 + -4

Combine like terms: 4 + -4 = 0
0 + -3b = 91 + -4
-3b = 91 + -4

Combine like terms: 91 + -4 = 87
-3b = 87

Divide each side by '-3'.
b = -29

Simplifying
b = -29

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