X+x-17+39=180
2x+22=180
Subtract 22 from both sides
2x=158
X= 79
Answer:
Given expression :
......[1]
Using distributive property: 
[1]⇒ 
Simplify:

Like terms are those terms which are same variables.
Combine like terms: we get;
......[2]

Simplify:
or
we can write equation [2] as;
Combine like terms of x variables;
Therefore, the expressions which are equivalent to the Given expression are:

Answer:
5/6
Step-by-step explanation:
2/3=4/6 and 4/6+1/6=5/6