1=(2x)(cos(x+x))

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

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

Remove parenthesis around (2x)
1 = 2x(cos(x + x))

Combine like terms: x + x = 2x
1 = 2x(cos(2x))

Remove parenthesis around (2x)
1 = 2x(cos * 2x)

Reorder the terms for easier multiplication:
1 = 2x(2cos * x)

Multiply cos * x
1 = 2x(2cosx)

Remove parenthesis around (2cosx)
1 = 2x * 2cosx

Reorder the terms for easier multiplication:
1 = 2 * 2x * cosx

Multiply 2 * 2
1 = 4x * cosx

Multiply x * cosx
1 = 4cosx2

Solving
1 = 4cosx2

Solving for variable 'c'.

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

Add '-4cosx2' to each side of the equation.
1 + -4cosx2 = 4cosx2 + -4cosx2

Combine like terms: 4cosx2 + -4cosx2 = 0
1 + -4cosx2 = 0

Add '-1' to each side of the equation.
1 + -1 + -4cosx2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -4cosx2 = 0 + -1
-4cosx2 = 0 + -1

Combine like terms: 0 + -1 = -1
-4cosx2 = -1

Divide each side by '-4osx2'.
c = 0.25o-1s-1x-2

Simplifying
c = 0.25o-1s-1x-2