Answer:
Step-by-step explanation:
1) let the number of students be 'x'
One ninth of 'x' : [tex]\frac{1}{9}*x = \frac{1}{9}x[/tex]
28 more than one-ninth of ' x' : [tex]\frac{1}{9}x+28[/tex]
2) Let the number of students 'x'
Four-ninths of 'x' = [tex]\frac{4}{9}x[/tex]
34 fewer than four-ninths of 'x' = [tex]\frac{4}{9}x - 34[/tex]
3) Let the number of students 'x'
One-ninths of 'x' = [tex]\frac{1}{9}x[/tex]
21 more than one-ninth of 'x' = [tex]\frac{1}{9}x + 21[/tex]
