15分之12×﹙6分之5+4分之3﹚+5分之2

1个回答

  • 9分之8×[4分之3÷﹙3分之1+5分之1﹚]

    =8/9×3/4÷8/15

    =2/3÷8/15

    =5/4

    =1.25

    6÷4分之3-4分之3÷6

    =8-1/8

    =7又7/8

    ﹙3分之2+4分之1-6分之5﹚×12

    =2/3×12+1/4×12-5/6×12

    =8+3-10

    =1

    36÷﹙9分之7+3分之2)

    =36÷13/9

    =324/13

    10分之11-4分之1-4分之3+10分之9

    =(11/10+9/10)-(1/4+3/4)

    =2-1

    =1

    87×88分之86

    =(88-1)×86/88

    =86-86/88

    =85又1/44

    9分之5÷5+5÷9分之5

    =1/9+9

    =9又1/9

    2.75+3分之2+1又6分之1

    =2.75+(2/3+1又1/6)

    =2又3/4+1又5/6

    =4又7/12

    1-36分之7÷18分之5-18分之5

    =1-7/10-5/18

    =3/10-5/18

    =1/45

    15分之4÷﹙9分之13+3分之2×6分之5﹚

    =4/15÷(13/9+5/9)

    =4/5÷2

    =2/5