问题
解答题
6.5:x=3.25:4
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答案
(1)6.5:x=3.25:4
3.25x=6.5×4,
3.25x÷3.5=6.5×4÷3.5,
x=8;
(2)
=x 2 0.15 0.6
0.6x=2×0.15,
0.6x=0.3,
0.6x÷0.6=0.3÷0.6
x=0.5;
(3)
=1.25 0.25
.x 1.6
0.25x=1.25×1.6
0.25x÷0.25=1.25×1.6÷0.25
x=8.