3cos(2x)+1=-1

Solution for 3cos(2x)+1=-1 equation:

Simplifying
3cos(2x) + 1 = -1

Remove parenthesis around (2x)
3cos * 2x + 1 = -1

Reorder the terms for easier multiplication:
3 * 2cos * x + 1 = -1

Multiply 3 * 2
6cos * x + 1 = -1

Multiply cos * x
6cosx + 1 = -1

Reorder the terms:
1 + 6cosx = -1

Solving
1 + 6cosx = -1

Solving for variable 'c'.

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

Add '-1' to each side of the equation.
1 + -1 + 6cosx = -1 + -1

Combine like terms: 1 + -1 = 0
0 + 6cosx = -1 + -1
6cosx = -1 + -1

Combine like terms: -1 + -1 = -2
6cosx = -2

Divide each side by '6osx'.
c = -0.3333333333o-1s-1x-1

Simplifying
c = -0.3333333333o-1s-1x-1