Solve.
31/4 – 11/2
13/4
11/2
21/4
23/4
17.85 ÷ 21
8.5
0.8
8.05
0.85
0.93 × 32
29.67
28.76
28.67
29.76
Which does NOT have a value of 21?
3 + 6 × 3
(3 + 6) × 3
6 × 7 ÷ 2
2 • (13 × 5 + 40) ÷ 10