4 6 7 9怎么算24点

1:6 ÷ 4 ×(7 + 9)2:(6 ÷ 4) × (7 + 9)3:6 ÷ (4 ÷ (7 + 9))4:6 ÷ 4 ×(9 + 7)5:(6 ÷ 4) × (9 + 7)6:6 ÷ (4 ÷ (9 + 7))7:(6 × (7 + 9)) ÷ 48:6 × (7 + 9) ÷ 49:6 × ((7 + 9) ÷ 4)10:(6 × (9 + 7)) ÷ 411:6 × (9 + 7) ÷ 412:6 × ((9 + 7) ÷ 4)13:(7 + 9) ÷ 4 × 614:((7 + 9) ÷ 4) × 615:(7 + 9) ÷ (4 ÷ 6)16:(7 + 9) × 6 ÷ 417:((7 + 9) × 6) ÷ 418:(7 + 9) × (6 ÷ 4)19:(9 + 7) ÷ 4 × 620:((9 + 7) ÷ 4) × 621:(9 + 7) ÷ (4 ÷ 6)22:(9 + 7) × 6 ÷ 423:((9 + 7) × 6) ÷ 424:(9 + 7) × (6 ÷ 4)