3a+4(4a+5)=

Solution for 3a+4(4a+5)= equation:

Simplifying
3a + 4(4a + 5) = 0

Reorder the terms:
3a + 4(5 + 4a) = 0
3a + (5 * 4 + 4a * 4) = 0
3a + (20 + 16a) = 0

Reorder the terms:
20 + 3a + 16a = 0

Combine like terms: 3a + 16a = 19a
20 + 19a = 0

Solving
20 + 19a = 0

Solving for variable 'a'.

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

Add '-20' to each side of the equation.
20 + -20 + 19a = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 19a = 0 + -20
19a = 0 + -20

Combine like terms: 0 + -20 = -20
19a = -20

Divide each side by '19'.
a = -1.052631579

Simplifying
a = -1.052631579