问题
解答题
解比例
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答案
(1)38:13=x:26,
13x=38×26,
13x÷13=988÷13,
x=76;
(2)
=1.2 x
,4 5
4x=1.2×5,
4x÷4=6÷4,
x=1.5;
(3)1.25:0.25=x:1.6,
0.25x=1.25×1.6,
0.25x÷0.25=2÷0.25,
x=8;
(4)
:x=3:12,3 4
3x=
×12,3 4
3x÷3=9÷3,
x=3.