2(3+cos(x))=7

Solution for 2(3+cos(x))=7 equation:

Simplifying
2(3 + cos(x)) = 7

Multiply cos * x
2(3 + cosx) = 7
(3 * 2 + cosx * 2) = 7
(6 + 2cosx) = 7

Solving
6 + 2cosx = 7

Solving for variable 'c'.

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

Add '-6' to each side of the equation.
6 + -6 + 2cosx = 7 + -6

Combine like terms: 6 + -6 = 0
0 + 2cosx = 7 + -6
2cosx = 7 + -6

Combine like terms: 7 + -6 = 1
2cosx = 1

Divide each side by '2osx'.
c = 0.5o-1s-1x-1

Simplifying
c = 0.5o-1s-1x-1