31=5+3b-13

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Solution for 31=5+3b-13 equation:


Simplifying
31 = 5 + 3b + -13

Reorder the terms:
31 = 5 + -13 + 3b

Combine like terms: 5 + -13 = -8
31 = -8 + 3b

Solving
31 = -8 + 3b

Solving for variable 'b'.

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

Add '-3b' to each side of the equation.
31 + -3b = -8 + 3b + -3b

Combine like terms: 3b + -3b = 0
31 + -3b = -8 + 0
31 + -3b = -8

Add '-31' to each side of the equation.
31 + -31 + -3b = -8 + -31

Combine like terms: 31 + -31 = 0
0 + -3b = -8 + -31
-3b = -8 + -31

Combine like terms: -8 + -31 = -39
-3b = -39

Divide each side by '-3'.
b = 13

Simplifying
b = 13

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