7/8-5/12+1/6=7/8-(5/12-1/6)=7/8+1/12=21/24+2/24=23/24
5/7*16.31-2.31/(7/5)=5/7(16.31-2.31)=5/7*14=10
35/(7/8)*(1-2/7)=35/(35/56)=56
3.2x-3*4=52 x= 40/3.2= 40*5/16=25/2
v=πr^2h=3.14*9*12=339=340 合格
7/8-5/12+1/6=7/8-(5/12-1/6)=7/8+1/12=21/24+2/24=23/24
5/7*16.31-2.31/(7/5)=5/7(16.31-2.31)=5/7*14=10
35/(7/8)*(1-2/7)=35/(35/56)=56
3.2x-3*4=52 x= 40/3.2= 40*5/16=25/2
v=πr^2h=3.14*9*12=339=340 合格