练习二 解方程。
60%x+25=40
x-10%x=18
22%x=$\frac{13}{40}$
x+30%x=52
(1-25%)x=36
$\frac{3}{4}$x-25%x=17.5
40%x-30=15
2x+20%x=3.3
35%x-$\frac{1}{5}$x=0.75
x+70%x=340
75%x-15%x=60
88%x+22%x=22
60%x+25=40
x-10%x=18
22%x=$\frac{13}{40}$
x+30%x=52
(1-25%)x=36
$\frac{3}{4}$x-25%x=17.5
40%x-30=15
2x+20%x=3.3
35%x-$\frac{1}{5}$x=0.75
x+70%x=340
75%x-15%x=60
88%x+22%x=22
答案:
60%x+25=40
解:0.6x=15
x=15÷0.6
x=25
x-10%x=18
解:0.9x=18
x=18÷0.9
x=20
22%x=$\frac{13}{40}$
解:0.22x=0.325
x=0.325÷0.22
x=$\frac{65}{44}$
x+30%x=52
解:1.3x=52
x=52÷1.3
x=40
(1-25%)x=36
解:0.75x=36
x=36÷0.75
x=48
$\frac{3}{4}$x-25%x=17.5
解:0.75x-0.25x=17.5
0.5x=17.5
x=35
40%x-30=15
解:0.4x=45
x=45÷0.4
x=112.5
2x+20%x=3.3
解:2.2x=3.3
x=3.3÷2.2
x=1.5
35%x-$\frac{1}{5}$x=0.75
解:0.35x-0.2x=0.75
0.15x=0.75
x=5
x+70%x=340
解:1.7x=340
x=340÷1.7
x=200
75%x-15%x=60
解:0.6x=60
x=60÷0.6
x=100
88%x+22%x=22
解:1.1x=22
x=22÷1.1
x=20
解:0.6x=15
x=15÷0.6
x=25
x-10%x=18
解:0.9x=18
x=18÷0.9
x=20
22%x=$\frac{13}{40}$
解:0.22x=0.325
x=0.325÷0.22
x=$\frac{65}{44}$
x+30%x=52
解:1.3x=52
x=52÷1.3
x=40
(1-25%)x=36
解:0.75x=36
x=36÷0.75
x=48
$\frac{3}{4}$x-25%x=17.5
解:0.75x-0.25x=17.5
0.5x=17.5
x=35
40%x-30=15
解:0.4x=45
x=45÷0.4
x=112.5
2x+20%x=3.3
解:2.2x=3.3
x=3.3÷2.2
x=1.5
35%x-$\frac{1}{5}$x=0.75
解:0.35x-0.2x=0.75
0.15x=0.75
x=5
x+70%x=340
解:1.7x=340
x=340÷1.7
x=200
75%x-15%x=60
解:0.6x=60
x=60÷0.6
x=100
88%x+22%x=22
解:1.1x=22
x=22÷1.1
x=20
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