19=a+72

Solution for 19=a+72 equation:

Simplifying
19 = a + 72

Reorder the terms:
19 = 72 + a

Solving
19 = 72 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
19 + -1a = 72 + a + -1a

Combine like terms: a + -1a = 0
19 + -1a = 72 + 0
19 + -1a = 72

Add '-19' to each side of the equation.
19 + -19 + -1a = 72 + -19

Combine like terms: 19 + -19 = 0
0 + -1a = 72 + -19
-1a = 72 + -19

Combine like terms: 72 + -19 = 53
-1a = 53

Divide each side by '-1'.
a = -53

Simplifying
a = -53