Question

(23分之7*0.75+4分之1*23分之7)+5.9+23分之16

Answer 1

因为 0.75=3/4

所以 (7/23)*(0.75)+(1/4)*(7/23)=(7/23)*(3/4+1/4)=7/23

故,原式=（7/23）+5.9+(16/23)=(7/23+16/23)+5.9=1+5.9=6.9