问题
解答题
|
答案
(1)
=3.5 1.4
,x 0.2
1.4x=3.5×0.2,
1.4x÷1.4=0.7÷1.4,
x=0.5;
(2)
+1 3
x=0.5,1 2
+1 3
x-1 2
=0.5-1 3
,1 3
x×2=1 2
×2,1 6
x=
;1 3
(3)0.36×5-0.75x=0.6,
1.8-0.75x=0.6,
1.8-0.75x+0.75x=0.6+0.75x,
0.6+0.75x-0.6=1.8-0.6,
0.75x÷0.75=1.2÷0.75,
x=1.6.