19-a=31

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Solution for 19-a=31 equation: 


Simplifying
19 + -1a = 31

Solving
19 + -1a = 31

Solving for variable 'a'.

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

Add '-19' to each side of the equation.
19 + -19 + -1a = 31 + -19

Combine like terms: 19 + -19 = 0
0 + -1a = 31 + -19
-1a = 31 + -19

Combine like terms: 31 + -19 = 12
-1a = 12

Divide each side by '-1'.
a = -12

Simplifying
a = -12

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