问题
解答题
|
答案
(1)X:50=1.5:75,
75x=50×1.5,
75x=75,
75x÷75=75÷75,
x=1;
(2)
+4 5
x=1,4 5
+4 5
x-4 5
=1-4 5
,4 5
x=4 5
,1 5
x=
;1 4
(3)25%x=4.75.
25%x÷25%=4.75÷25%,
x=19.
|
(1)X:50=1.5:75,
75x=50×1.5,
75x=75,
75x÷75=75÷75,
x=1;
(2)
+4 5
x=1,4 5
+4 5
x-4 5
=1-4 5
,4 5
x=4 5
,1 5
x=
;1 4
(3)25%x=4.75.
25%x÷25%=4.75÷25%,
x=19.