3(a+2)-1=17

Solution for 3(a+2)-1=17 equation:

Simplifying
3(a + 2) + -1 = 17

Reorder the terms:
3(2 + a) + -1 = 17
(2 * 3 + a * 3) + -1 = 17
(6 + 3a) + -1 = 17

Reorder the terms:
6 + -1 + 3a = 17

Combine like terms: 6 + -1 = 5
5 + 3a = 17

Solving
5 + 3a = 17

Solving for variable 'a'.

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

Add '-5' to each side of the equation.
5 + -5 + 3a = 17 + -5

Combine like terms: 5 + -5 = 0
0 + 3a = 17 + -5
3a = 17 + -5

Combine like terms: 17 + -5 = 12
3a = 12

Divide each side by '3'.
a = 4

Simplifying
a = 4