9cosx-1=7cosx

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Solution for 9cosx-1=7cosx equation:


Simplifying
9cosx + -1 = 7cosx

Reorder the terms:
-1 + 9cosx = 7cosx

Solving
-1 + 9cosx = 7cosx

Solving for variable 'c'.

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

Add '-7cosx' to each side of the equation.
-1 + 9cosx + -7cosx = 7cosx + -7cosx

Combine like terms: 9cosx + -7cosx = 2cosx
-1 + 2cosx = 7cosx + -7cosx

Combine like terms: 7cosx + -7cosx = 0
-1 + 2cosx = 0

Add '1' to each side of the equation.
-1 + 1 + 2cosx = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2cosx = 0 + 1
2cosx = 0 + 1

Combine like terms: 0 + 1 = 1
2cosx = 1

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

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

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