31=47-4b

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Solution for 31=47-4b equation:


Simplifying
31 = 47 + -4b

Solving
31 = 47 + -4b

Solving for variable 'b'.

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

Add '4b' to each side of the equation.
31 + 4b = 47 + -4b + 4b

Combine like terms: -4b + 4b = 0
31 + 4b = 47 + 0
31 + 4b = 47

Add '-31' to each side of the equation.
31 + -31 + 4b = 47 + -31

Combine like terms: 31 + -31 = 0
0 + 4b = 47 + -31
4b = 47 + -31

Combine like terms: 47 + -31 = 16
4b = 16

Divide each side by '4'.
b = 4

Simplifying
b = 4

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