东东鱼
花朵
共回答了20个问题采纳率:90% 举报
(1)x-25%x=36,
0.75x=36,
0.75x÷0.75=36÷0.75,
x=48,
(2)2x+120%×5=16,
2x+6=16,
2x+6-6=16-6,
2x=10,
2x÷2=10÷2,
x=5,
(3)
1
3 x+
1
2 x=
5
6 ,
5
6 x=
5
6 ,
5
6 x×
6
5 =
5
6 ×
6
5 ,
x=1,
(4)(1-45%)x=16.5,
0.55x=16.5,
0.55x÷0.55=16.5÷0.55,
x=30.
1年前
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