.3(a+11)+.7a=7.3

Solution for .3(a+11)+.7a=7.3 equation:

Simplifying
0.3(a + 11) + 0.7a = 7.3

Reorder the terms:
0.3(11 + a) + 0.7a = 7.3
(11 * 0.3 + a * 0.3) + 0.7a = 7.3
(3.3 + 0.3a) + 0.7a = 7.3

Combine like terms: 0.3a + 0.7a = 1a
3.3 + 1a = 7.3

Solving
3.3 + 1a = 7.3

Solving for variable 'a'.

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

Add '-3.3' to each side of the equation.
3.3 + -3.3 + 1a = 7.3 + -3.3

Combine like terms: 3.3 + -3.3 = 0.0
0.0 + 1a = 7.3 + -3.3
1a = 7.3 + -3.3

Combine like terms: 7.3 + -3.3 = 4
1a = 4

Divide each side by '1'.
a = 4

Simplifying
a = 4