5道解一元一次方程题!在线等!要步骤!速度!0.5x-0.7=6.5-1.3x65％（y-1）=37％（y+1）-0.822.4-y-4 / 2.5=0.6yx+1 / 0.2 - 3x-1 / 0.4 = 10.1x-0.2 / 0.02 - x+1 / 0.5 =3

5道解一元一次方程题!在线等!要步骤!速度!0.5x-0.7=6.5-1.3x65％（y-1）=37％（y+1）-0.822.4-y-4 / 2.5=0.6yx+1 / 0.2 - 3x-1 / 0.4 = 10.1x-0.2 / 0.02 - x+1 / 0.5 =3
5道解一元一次方程题!在线等!要步骤!速度!
0.5x-0.7=6.5-1.3x
65％（y-1）=37％（y+1）-0.82
2.4-y-4 / 2.5=0.6y
x+1 / 0.2 - 3x-1 / 0.4 = 1
0.1x-0.2 / 0.02 - x+1 / 0.5 =3

5道解一元一次方程题!在线等!要步骤!速度!0.5x-0.7=6.5-1.3x65％（y-1）=37％（y+1）-0.822.4-y-4 / 2.5=0.6yx+1 / 0.2 - 3x-1 / 0.4 = 10.1x-0.2 / 0.02 - x+1 / 0.5 =3
0.5x-0.7=6.5-1.3x
1.8x=7.2
x=4
65％（y-1）=37％（y+1）-0.82
25%y=1.02-0.82
y=0.8
2.4-y-4 / 2.5=0.6y
1.6y=0.8
y=0.5
x+1 / 0.2 - 3x-1 / 0.4 = 1
2x+2-3x+1=0.4
x=2.6
0.1x-0.2 / 0.02 - x+1 / 0.5 =3
5x-10-2x-2=3
x=5

0.5x-0.7=6.5-1.3x
1.8x=7.2
x=4
65％（y-1）=37％（y+1）-0.82
65％y-65％=37％y+37％-0.82
28%y=65％+37％-0.82
28y=65+37-82
28y=20
y=5/7
2.4-y-4 / 2.5=0.6y
48-20y-32=12y
16...

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0.5x-0.7=6.5-1.3x
1.8x=7.2
x=4
65％（y-1）=37％（y+1）-0.82
65％y-65％=37％y+37％-0.82
28%y=65％+37％-0.82
28y=65+37-82
28y=20
y=5/7
2.4-y-4 / 2.5=0.6y
48-20y-32=12y
16=32y
y=1/2
x+1 / 0.2 - 3x-1 / 0.4 = 1
x+5- 3x-5/2 = 1
2x=3/2
x=3/4
0.1x-0.2 / 0.02 - x+1 / 0.5 =3
0.1x-10 - x+2 =3
0.9x=-11
x=-110/9

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第1题
5x-7=65-13x
18x=72
x=4
第2题
65y-65=37y+37-82
28y=20
y=5/7
第3题
2.4-y-4=1.5y
-1.6=2.5y
y=-0.64
第4题
5x+5-7.5x+2.5=1
-2.5x=-6.5
5x=13
x=13/5=2.6
第5题
5x-10-2x-2=3
3x=15
x=5

后面几个表述不清，看是哪一种？
1、10.5x-0.7=6.5-1.3x
10.5X+1.3X=6.5+0.7
11.8X=7.2
X=36/59
2、65％（y-1）=37％（y+1）-0.82
0.65Y-0.65=0.37Y+0.37-0.08
0.65Y-0.37Y=0.65+0.37-0.08
0.28Y=0.94
...

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后面几个表述不清，看是哪一种？
1、10.5x-0.7=6.5-1.3x
10.5X+1.3X=6.5+0.7
11.8X=7.2
X=36/59
2、65％（y-1）=37％（y+1）-0.82
0.65Y-0.65=0.37Y+0.37-0.08
0.65Y-0.37Y=0.65+0.37-0.08
0.28Y=0.94
Y=47/14
3、2.4-y-4 / 2.5=0.6y
（1）是2.4-y-4 / 2.5=0.6y
2.4-y-1.6=0.6y
1.6y=2.4-1.6
1.6y=0.8
y=1/2
(2)2.4-(y-4) / 2.5=0.6y
2.4×2.5-y+4=0.6×2.5y
10=2.5y
y=4
4、x+1 / 0.2 - 3x-1 / 0.4 = 1
（1）x+5-3x-2.5=1
2x=2.5
x=1.25
(2)(x+1) / 0.2 - (3x-1) / 0.4 = 1
2(x+1)-(3x-1)=0.4
2x+2-3x+1=0.4
x=3-0.4
x=2.6
5、0.1x-0.2 / 0.02 - x+1 / 0.5 =3
（1）0.1x-0.2 / 0.02 - x+1 / 0.5 =3
0.1x-10-x+2=3
0.9x=-11
x=-110/9
(2)
(0.1x-0.2) / 0.02 -( x+1) / 0.5 =3
0.5(0.1x-0.2)-0.02(x+1)=3×0.01
0.05x-0.1-0.02x-0.02=0.03
0.03x=0.12+0.03
0.03x=0.15
x=5

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