Question

（13-13乘以3分之2）除以26 3分之7乘以9分之13加3分之14乘以9分之

Answer 1

（13-13乘以3分之2）除以26

= 13 x ( 1- 2/3 )

= 13 ÷ 26 x 1/3

= 1/2 x 1/3

= 6分之1

3分之7乘以9分之13加3分之14乘以9分之7= 7/3 x 13/9 + 14/3 x 7/9 = 13/3 x 7/9 + 14/3 x 7/9 = 7/9 x ( 13/3 +14/3 )= 7/9 x ( 27/3 )

= 7/9 x 9

= 7