3a-6+9+a=10

Solution for 3a-6+9+a=10 equation:

Simplifying
3a + -6 + 9 + a = 10

Reorder the terms:
-6 + 9 + 3a + a = 10

Combine like terms: -6 + 9 = 3
3 + 3a + a = 10

Combine like terms: 3a + a = 4a
3 + 4a = 10

Solving
3 + 4a = 10

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 4a = 10 + -3

Combine like terms: 3 + -3 = 0
0 + 4a = 10 + -3
4a = 10 + -3

Combine like terms: 10 + -3 = 7
4a = 7

Divide each side by '4'.
a = 1.75

Simplifying
a = 1.75