Cos(2x)+4=7Cos(x)

Solution for Cos(2x)+4=7Cos(x) equation:

Simplifying
Cos(2x) + 4 = 7Cos(x)

Remove parenthesis around (2x)
osC * 2x + 4 = 7Cos(x)

Reorder the terms for easier multiplication:
2osC * x + 4 = 7Cos(x)

Multiply osC * x
2osxC + 4 = 7Cos(x)

Reorder the terms:
4 + 2osxC = 7Cos(x)

Multiply osC * x
4 + 2osxC = 7osxC

Solving
4 + 2osxC = 7osxC

Solving for variable 'o'.

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

Add '-7osxC' to each side of the equation.
4 + 2osxC + -7osxC = 7osxC + -7osxC

Combine like terms: 2osxC + -7osxC = -5osxC
4 + -5osxC = 7osxC + -7osxC

Combine like terms: 7osxC + -7osxC = 0
4 + -5osxC = 0

Add '-4' to each side of the equation.
4 + -4 + -5osxC = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -5osxC = 0 + -4
-5osxC = 0 + -4

Combine like terms: 0 + -4 = -4
-5osxC = -4

Divide each side by '-5sxC'.
o = 0.8s-1x-1C-1

Simplifying
o = 0.8s-1x-1C-1