4a+3(a+3)=

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

Simplifying
4a + 3(a + 3) = 0

Reorder the terms:
4a + 3(3 + a) = 0
4a + (3 * 3 + a * 3) = 0
4a + (9 + 3a) = 0

Reorder the terms:
9 + 4a + 3a = 0

Combine like terms: 4a + 3a = 7a
9 + 7a = 0

Solving
9 + 7a = 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 + 7a = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 7a = 0 + -9
7a = 0 + -9

Combine like terms: 0 + -9 = -9
7a = -9

Divide each side by '7'.
a = -1.285714286

Simplifying
a = -1.285714286