Answer:
x=9
Step-by-step explanation:
31+39+11x+11=180
Simplify both sides from the equation:
(11x)+(31+39+11)=180 (combine like terms)
11x+81=180
Subtract 81 from both sides
11x+81-81=180-81
You end up with:
11x=99 (Divide both sides by 11)
39+31=70
70+(11x+11)=180
70-70+(11x+11)=180-70
11x+11 = 110
11x+11-11 = 110-11
11x = 99
11x/11 = 99/11
x = 9
