解方程: 4.9+0.5x
解方程:4.9+0.5x=5.61-75%x=0.7540.6=x:910....
解方程: 4.9+0.5x=5.6 1-75%x=0.75 40.6=x:910.
展开
唐锴的空间bQ
推荐于2016-08-12
·
TA获得超过101个赞
关注
(1)4.9+0.5x=5.6,
4.9+0.5x-4.9=5.6-4.9,
0.5x÷0.5=0.7÷0.5,
x=1.4;
(2)1-75%x=0.75,
1-75%x+75%=0.75+75%x,
1-0.75=0.75+75%x-0.75,
0.25÷75%=75%x÷75%,
x=
;
(3)
=x:,
0.6x=4×
,
0.6x÷0.6=
÷0.6,
x=6.
收起
为你推荐: