问题
解答题
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答案
=0.7 x
,14 5
14x=0.7×5,
14x=3.5,
14x÷14=3.5÷14,
x=0.25;
(2)8:30=24:x,
8x=24×30,
8x=720,
8x÷8=720÷8,
x=90;
(3)
:2 3
=x:9,5 6
x=5 6
×9,2 3
x=6,5 6
x÷5 6
=6÷5 6
,5 6
x=
;36 5
(4)
:3 5
=x:6 7
,5 4
x=6 7
×3 5
,5 4
x=6 7
,3 4
x÷6 7
=6 7
÷3 4
,6 7
x=
.7 8