3(a-1)+2=5

Solution for 3(a-1)+2=5 equation:

Simplifying
3(a + -1) + 2 = 5

Reorder the terms:
3(-1 + a) + 2 = 5
(-1 * 3 + a * 3) + 2 = 5
(-3 + 3a) + 2 = 5

Reorder the terms:
-3 + 2 + 3a = 5

Combine like terms: -3 + 2 = -1
-1 + 3a = 5

Solving
-1 + 3a = 5

Solving for variable 'a'.

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

Add '1' to each side of the equation.
-1 + 1 + 3a = 5 + 1

Combine like terms: -1 + 1 = 0
0 + 3a = 5 + 1
3a = 5 + 1

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

Divide each side by '3'.
a = 2

Simplifying
a = 2