解方程或比例. 4x+3×0.7=6.5 x:8=34
解方程或比例.4x+3×0.7=6.5x:8=34:65x-35x=35....
解方程或比例. 4x+3×0.7=6.5 x:8=34:65 x-35x=35.
展开
根据题意可得:
(1)4x+3×0.7=6.5,
4x+2.1=6.5,
4x+2.1-2.1=6.5-2.1,
4x=4.4,
4x÷4=4.4÷4,
x=1.1;
(2)x:8=
:
,
x=8×
,
x=6,
x÷
=6÷
,
x=5;
(3)x-
x=
,
x=
,
x÷
=
÷
,
x=
.
收起
为你推荐: