Question

8分之7*4分之1+0.25*0.125 7分之58+5.8-7分之23+4.2 15分之2*｛12.6-（5分之33+

Answer 1

8分之7*4分之1+0.25*0.125 =1/4×（7/8+0.125)=1/4×1=1/4

7分之58+5.8-7分之23+4.2 =(58/7-23/7)+(5.8+4.2)=5+10=15

15分之2*｛12.6-（5分之33+0.125/12.5）｝=2/15×{12.6-6.6-1/10}