5(a+20)=

Solution for 5(a+20)= equation:

Simplifying
5(a + 20) = 0

Reorder the terms:
5(20 + a) = 0
(20 * 5 + a * 5) = 0
(100 + 5a) = 0

Solving
100 + 5a = 0

Solving for variable 'a'.

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

Add '-100' to each side of the equation.
100 + -100 + 5a = 0 + -100

Combine like terms: 100 + -100 = 0
0 + 5a = 0 + -100
5a = 0 + -100

Combine like terms: 0 + -100 = -100
5a = -100

Divide each side by '5'.
a = -20

Simplifying
a = -20