-6-9=-3b+8+b

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Solution for -6-9=-3b+8+b equation:


Simplifying
-6 + -9 = -3b + 8 + b

Combine like terms: -6 + -9 = -15
-15 = -3b + 8 + b

Reorder the terms:
-15 = 8 + -3b + b

Combine like terms: -3b + b = -2b
-15 = 8 + -2b

Solving
-15 = 8 + -2b

Solving for variable 'b'.

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

Add '2b' to each side of the equation.
-15 + 2b = 8 + -2b + 2b

Combine like terms: -2b + 2b = 0
-15 + 2b = 8 + 0
-15 + 2b = 8

Add '15' to each side of the equation.
-15 + 15 + 2b = 8 + 15

Combine like terms: -15 + 15 = 0
0 + 2b = 8 + 15
2b = 8 + 15

Combine like terms: 8 + 15 = 23
2b = 23

Divide each side by '2'.
b = 11.5

Simplifying
b = 11.5

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