6+6[(2*1.25)-1]=3+12(1.25)

Solution for 6+6[(2*1.25)-1]=3+12(1.25) equation:

Simplifying
6 + 6[(2 * 1.25) + -1] = 3 + 12(1.25)

Multiply 2 * 1.25
6 + 6[(2.5) + -1] = 3 + 12(1.25)
6 + 6[2.5 + -1] = 3 + 12(1.25)

Combine like terms: 2.5 + -1 = 1.5
6 + 6[1.5] = 3 + 12(1.25)

Multiply 6 * 1.5
6 + 9 = 3 + 12(1.25)

Combine like terms: 6 + 9 = 15
15 = 3 + 12(1.25)

Multiply 12 * 1.25
15 = 3 + 15

Combine like terms: 3 + 15 = 18
15 = 18

Solving
15 = 18

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.