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
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![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](/uploads/image/z/9607540-4-0.jpg?t=5%E9%81%93%E8%A7%A3%E4%B8%80%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E9%A2%98%21%E5%9C%A8%E7%BA%BF%E7%AD%89%21%E8%A6%81%E6%AD%A5%E9%AA%A4%21%E9%80%9F%E5%BA%A6%210.5x-0.7%3D6.5-1.3x65%EF%BC%85%EF%BC%88y-1%EF%BC%89%3D37%EF%BC%85%EF%BC%88y%2B1%EF%BC%89-0.822.4-y-4+%2F+2.5%3D0.6yx%2B1+%2F+0.2+-+3x-1+%2F+0.4+%3D+10.1x-0.2+%2F+0.02+-+x%2B1+%2F+0.5+%3D3)
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
收起
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
...
全部展开
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
收起