3b+9=-11

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Solution for 3b+9=-11 equation: 


Simplifying
3b + 9 = -11

Reorder the terms:
9 + 3b = -11

Solving
9 + 3b = -11

Solving for variable 'b'.

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

Add '-9' to each side of the equation.
9 + -9 + 3b = -11 + -9

Combine like terms: 9 + -9 = 0
0 + 3b = -11 + -9
3b = -11 + -9

Combine like terms: -11 + -9 = -20
3b = -20

Divide each side by '3'.
b = -6.666666667

Simplifying
b = -6.666666667

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