要怎样算?
0.8=( ):5,( )等于多少?
这题怎么算,0.8怎样变比?
2²+(1/2)²-根号1又7/9=
(2✖️2)+(1/2*1/2)-(根号16/9*已化假分数*等于4/3)=4+1/4-4/3
=3又12/12+3/12-16/12
=48/12+3/12-16/12
=35/12
=2又11/12
22 + (1/2)2 - √1又7/9 = (2×2) + (1/2×1/2) - √16/9 =4 + 1/4 - 4/3 =4又3/12 - 16/12 =(51-16)/12 =35/12 =2又11/12