问题
解答题
|
答案
(1)
×3 5
-X=1 2
,1 5
-x=3 10
,1 5
-x+x=3 10
+x,1 5
-3 10
=1 5
+x-1 5
,1 5
x=
;1 10
(2)
×5 6
-1 5
X=1 3
,1 18
-1 6
x+1 3
x=1 3
+1 18
x,1 3
-1 6
=1 18
+1 18
x-1 3
,1 18
=1 9
x,1 3
÷1 9
=1 3
x÷1 3
,1 3
x=
;1 3
(3)5X+4×0.6=7.4,
5x+2.4=7.4,
5x+2.4-2.4=7.4-2.4,
5x=5,
5x÷5=5÷5,
x=1;
(4)X-
×5 8
=4 5
,1 3
x-
=1 2
,1 3
x-
+1 2
=1 2
+1 3
,1 2
x=
.5 6