4a+6-3a+1a-15=

Solution for 4a+6-3a+1a-15= equation:

Simplifying
4a + 6 + -3a + 1a + -15 = 0

Reorder the terms:
6 + -15 + 4a + -3a + 1a = 0

Combine like terms: 6 + -15 = -9
-9 + 4a + -3a + 1a = 0

Combine like terms: 4a + -3a = 1a
-9 + 1a + 1a = 0

Combine like terms: 1a + 1a = 2a
-9 + 2a = 0

Solving
-9 + 2a = 0

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 9 + 2a = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 2a = 0 + 9
2a = 0 + 9

Combine like terms: 0 + 9 = 9
2a = 9

Divide each side by '2'.
a = 4.5

Simplifying
a = 4.5