The 9 in the tenths place is one tenth the value of the 9 in the ones place.
Given. Total 8 math class, 222 students in total. One class is 32 student and 7 equally size.
Use 221 - 32 = 189 students
Let x be the equally size. 7x=189, x= 27 students
Answer:
C. -2x - 2
The picture shows the work I did to get the answer.
Hope this helps!