3+b-8=15

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Solution for 3+b-8=15 equation: 


Simplifying
3 + b + -8 = 15

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

Combine like terms: 3 + -8 = -5
-5 + b = 15

Solving
-5 + b = 15

Solving for variable 'b'.

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

Add '5' to each side of the equation.
-5 + 5 + b = 15 + 5

Combine like terms: -5 + 5 = 0
0 + b = 15 + 5
b = 15 + 5

Combine like terms: 15 + 5 = 20
b = 20

Simplifying
b = 20

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