-b+9=-4b

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Solution for -b+9=-4b equation:


Simplifying
-1b + 9 = -4b

Reorder the terms:
9 + -1b = -4b

Solving
9 + -1b = -4b

Solving for variable 'b'.

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

Add '4b' to each side of the equation.
9 + -1b + 4b = -4b + 4b

Combine like terms: -1b + 4b = 3b
9 + 3b = -4b + 4b

Combine like terms: -4b + 4b = 0
9 + 3b = 0

Add '-9' to each side of the equation.
9 + -9 + 3b = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 3b = 0 + -9
3b = 0 + -9

Combine like terms: 0 + -9 = -9
3b = -9

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

Simplifying
b = -3

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