问题
解答题
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答案
(1)3.5:x=0.7:1.2,
0.7x=3.5×1.2,
0.7x÷0.7=4.2÷0.7,
x=6;
(2)2.5:x=0.4:0.2,
0.4x=2.5×0.2,
0.4x÷0.4=0.5÷0.4,
x=1.25;
(3)
=3.5 0.7
,8 x
3.5x=0.7×8,
3.5x÷3.5=5.6÷3.5,
x=1.6;
(4)
=5 6
,4 x
5x=6×4,
5x÷5=24÷5,
x=4.8.