3(13-2)=-3+a

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

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

Combine like terms: 13 + -2 = 11
3(11) = -3 + a

Multiply 3 * 11
33 = -3 + a

Solving
33 = -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.
33 + -1a = -3 + a + -1a

Combine like terms: a + -1a = 0
33 + -1a = -3 + 0
33 + -1a = -3

Add '-33' to each side of the equation.
33 + -33 + -1a = -3 + -33

Combine like terms: 33 + -33 = 0
0 + -1a = -3 + -33
-1a = -3 + -33

Combine like terms: -3 + -33 = -36
-1a = -36

Divide each side by '-1'.
a = 36

Simplifying
a = 36