31=2A+(A-5)

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Solution for 31=2A+(A-5) equation:


Simplifying
31 = 2A + (A + -5)

Reorder the terms:
31 = 2A + (-5 + A)

Remove parenthesis around (-5 + A)
31 = 2A + -5 + A

Reorder the terms:
31 = -5 + 2A + A

Combine like terms: 2A + A = 3A
31 = -5 + 3A

Solving
31 = -5 + 3A

Solving for variable 'A'.

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

Add '-3A' to each side of the equation.
31 + -3A = -5 + 3A + -3A

Combine like terms: 3A + -3A = 0
31 + -3A = -5 + 0
31 + -3A = -5

Add '-31' to each side of the equation.
31 + -31 + -3A = -5 + -31

Combine like terms: 31 + -31 = 0
0 + -3A = -5 + -31
-3A = -5 + -31

Combine like terms: -5 + -31 = -36
-3A = -36

Divide each side by '-3'.
A = 12

Simplifying
A = 12

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