19=a+7.2

Solution for 19=a+7.2 equation:

Simplifying
19 = a + 7.2

Reorder the terms:
19 = 7.2 + a

Solving
19 = 7.2 + 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 = 7.2 + a + -1a

Combine like terms: a + -1a = 0
19 + -1a = 7.2 + 0
19 + -1a = 7.2

Add '-19' to each side of the equation.
19 + -19 + -1a = 7.2 + -19

Combine like terms: 19 + -19 = 0
0 + -1a = 7.2 + -19
-1a = 7.2 + -19

Combine like terms: 7.2 + -19 = -11.8
-1a = -11.8

Divide each side by '-1'.
a = 11.8

Simplifying
a = 11.8