3(1[2x-9]1)=15

Solution for 3(1[2x-9]1)=15 equation:

Simplifying
3(1[2x + -9] * 1) = 15

Reorder the terms:
3(1[-9 + 2x] * 1) = 15

Reorder the terms for easier multiplication:
3(1 * 1[-9 + 2x]) = 15

Multiply 1 * 1
3(1[-9 + 2x]) = 15
3([-9 * 1 + 2x * 1]) = 15
3([-9 + 2x]) = 15
(-9 * 3 + 2x * 3) = 15
(-27 + 6x) = 15

Solving
-27 + 6x = 15

Solving for variable 'x'.

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

Add '27' to each side of the equation.
-27 + 27 + 6x = 15 + 27

Combine like terms: -27 + 27 = 0
0 + 6x = 15 + 27
6x = 15 + 27

Combine like terms: 15 + 27 = 42
6x = 42

Divide each side by '6'.
x = 7

Simplifying
x = 7