4a-9(3+a)=

Solution for 4a-9(3+a)= equation:

Simplifying
4a + -9(3 + a) = 0
4a + (3 * -9 + a * -9) = 0
4a + (-27 + -9a) = 0

Reorder the terms:
-27 + 4a + -9a = 0

Combine like terms: 4a + -9a = -5a
-27 + -5a = 0

Solving
-27 + -5a = 0

Solving for variable 'a'.

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

Add '27' to each side of the equation.
-27 + 27 + -5a = 0 + 27

Combine like terms: -27 + 27 = 0
0 + -5a = 0 + 27
-5a = 0 + 27

Combine like terms: 0 + 27 = 27
-5a = 27

Divide each side by '-5'.
a = -5.4

Simplifying
a = -5.4