7cos(x)+9=-2cos(x)

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Solution for 7cos(x)+9=-2cos(x) equation:


Simplifying
7cos(x) + 9 = -2cos(x)

Multiply cos * x
7cosx + 9 = -2cos(x)

Reorder the terms:
9 + 7cosx = -2cos(x)

Multiply cos * x
9 + 7cosx = -2cosx

Solving
9 + 7cosx = -2cosx

Solving for variable 'c'.

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

Add '2cosx' to each side of the equation.
9 + 7cosx + 2cosx = -2cosx + 2cosx

Combine like terms: 7cosx + 2cosx = 9cosx
9 + 9cosx = -2cosx + 2cosx

Combine like terms: -2cosx + 2cosx = 0
9 + 9cosx = 0

Add '-9' to each side of the equation.
9 + -9 + 9cosx = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 9cosx = 0 + -9
9cosx = 0 + -9

Combine like terms: 0 + -9 = -9
9cosx = -9

Divide each side by '9osx'.
c = -1o-1s-1x-1

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

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