将下列中给出的数进行加,减,乘,除,括号运算,结果为24.9 7 5 4=24.

1:9 + (7 - 4) × 52:9 + ((7 - 4) × 5)3:9 + (5 × (7 - 4))4:9 + 5 ×(7 - 4)5:(9 - 5) × 7 - 46:((9 - 5) × 7) - 47:9 - (5 × (4 - 7))8:9 - 5 ×(4 - 7)9:9 - (4 - 7) × 510:9 - ((4 - 7) × 5)11:9 × 4 -...