7.09/0.52=?/52=?3.428/7.5=?/75=?26/4./42=?19.4/0.012=?/12=?
7.09/0.52=?/52=?3.428/7.5=?/75=?26/4./42=?19.4/0.012=?/12=?
0.012*0.75=( )*7.5
37.7除以0.52=()除以52
12( )=0.012( ) 括号里应填什么单位
观察下列等式:39×41=402-12,48×52=502-22,56×64=602-42,65×75=702-52,8
()÷25=()分之39=26÷()=0.52=()%
7.5x-x=52 怎么解
7.5:X=24:12
0.52x-(1-0.52)x=80
75%x+3*4/5=7.5
12+22+32+42+52+…+n2=
56+52*52=