First, we group together the terms with variables in one side by subtracting 3/2 x and 5 from both sides of the equation.
(2/3)x - (3/2)x + 5 - 5 = (3/2)x - (3/2)x - 5
(-5/6)x = -5
The value of x from the equation is 6.
You can use the sum and difference identities which for cosine is cos(a+b)= cosacosb-sinasinb
F=9/5c+32
-31=9/5c+32
-63=9/5c
-35=c
