-9=3x+b

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Solution for -9=3x+b equation:


Simplifying
-9 = 3x + b

Reorder the terms:
-9 = b + 3x

Solving
-9 = b + 3x

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.
-9 + -1b = b + -1b + 3x

Combine like terms: b + -1b = 0
-9 + -1b = 0 + 3x
-9 + -1b = 3x

Add '9' to each side of the equation.
-9 + 9 + -1b = 9 + 3x

Combine like terms: -9 + 9 = 0
0 + -1b = 9 + 3x
-1b = 9 + 3x

Divide each side by '-1'.
b = -9 + -3x

Simplifying
b = -9 + -3x

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