3(13-2a)=-3+a

Solution for 3(13-2a)=-3+a equation:

Simplifying
3(13 + -2a) = -3 + a
(13 * 3 + -2a * 3) = -3 + a
(39 + -6a) = -3 + a

Solving
39 + -6a = -3 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
39 + -6a + -1a = -3 + a + -1a

Combine like terms: -6a + -1a = -7a
39 + -7a = -3 + a + -1a

Combine like terms: a + -1a = 0
39 + -7a = -3 + 0
39 + -7a = -3

Add '-39' to each side of the equation.
39 + -39 + -7a = -3 + -39

Combine like terms: 39 + -39 = 0
0 + -7a = -3 + -39
-7a = -3 + -39

Combine like terms: -3 + -39 = -42
-7a = -42

Divide each side by '-7'.
a = 6

Simplifying
a = 6