问题
解答题
2:8=6:x 0.6:36%=5:x3:(x+1)=9:4.
答案
(1)2:8=6:x,
2×x=8×6,
2x=48,
2x÷2=48÷2,
x=24;
(2)0.6:36%=5:x,
0.6×x=0.36×5,
0.6x=1.8,
0.6x÷0.6=1.8÷0.6,
x=3;
(3)3:(x+1)=9:4,
(x+1)×9=3×4,
9x+9=12
9x+9-9=12-9,
9x=3,
9x÷9=3÷9,
x=
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