2×9÷6 71-(38+24) 48+27÷9 56÷(44-37)
42-(8+16) 72÷8×7 (63-21)÷7
59-(22+18)
21+42÷7
6×3÷9
40÷(26-21)
18÷3×6 90-47+24
38-32÷4 72÷(25-17)
