-(1-2a)(3+3)=35

Solution for -(1-2a)(3+3)=35 equation:

Simplifying
-1(1 + -2a)(3 + 3) = 35

Combine like terms: 3 + 3 = 6
-1(1 + -2a)(6) = 35

Reorder the terms for easier multiplication:
-1 * 6(1 + -2a) = 35

Multiply -1 * 6
-6(1 + -2a) = 35
(1 * -6 + -2a * -6) = 35
(-6 + 12a) = 35

Solving
-6 + 12a = 35

Solving for variable 'a'.

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

Add '6' to each side of the equation.
-6 + 6 + 12a = 35 + 6

Combine like terms: -6 + 6 = 0
0 + 12a = 35 + 6
12a = 35 + 6

Combine like terms: 35 + 6 = 41
12a = 41

Divide each side by '12'.
a = 3.416666667

Simplifying
a = 3.416666667