问题
解答题
求未知数X. X÷
X-0.8X-6=16 X:
|
答案
(1)x÷
=3 10
,3 100
x÷
×3 10
=3 10
×3 100
,3 10
x=
;9 1000
(2)x-0.8x-6=16,
0.2x=22,
0.2x÷0.2=22÷0.2,
x=110;
(3)x:
=1 2
:2 5 7 8
x=7 8
×2 5
,1 2
x=7 8
,1 5
x÷7 8
=7 8
÷1 5
,7 8
x=
.8 35