优质解答
一元一次方程 有答案
1、x/4=-x/2+3
x/4+x/2=3
3x/4=3
x=4
2、1/2(x*x-y)+1/3(x-y*y)+1/6(x*x+y*y)
=1/2x^2-1/2y+1/3x-1/3y^2+1/6x^2+1/6y^2
=2/3x^2-1/2y+1/3x-1/6y^2
3、x/4=-x/2+3 4、
x/4+x/2=34
3x/4=34
x=34
4、(x+0.5)+x=17
2x=17-0.5
x=8.25
5、x+14/7=x+20/4
4(x+14)=7(x+20)
4x+56=7x+140
3x=-84
x=-28
6、x+15/5=1/2— x—7/3
6(x+15)=15-10(x-7)
6x+90=15-10x+70
16x=-5
x=-5/16
7、-3x=15
x=15/(-3)
x=-5
8、-n/3-2=10
-n/3=12
n=-36
9、3x+3=2x+7
3x-2x=7-3
x=4
10、5/12x-x/4=1/3
5x-3x=4
2x=4
x=2
11、2/3—8x=3-x/2
4-48x=3(3-x)
4-48x=9-3x
-45x=5
x=-1/9
12、0.5x-0.7=6.5-1.3x
0.5x+1.3x=6.5+0.7
1.8x=7.2
x=4
13、3x-6/6=2x/5 -3
5(3x-6)=12x-90
15x-30=12x-90
3x=-60
x=-20
没有答案
1.2(x-2)-3(4x-1)=9(1-x)
2.11x+64-2x=100-9x
3.15-(8-5x)=7x+(4-3x)
4.3(x-7)-2[9-4(2-x)]=22
5.3/2[2/3(1/4x-1)-2]-x=2
6.2(x-2)+2=x+1
7.0.4(x-0.2)+1.5=0.7x-0.38
8.30x-10(10-x)=100
9.4(x+2)=5(x-2)
10.120-4(x+5)=25
11.15x+863-65x=54
12.12.3(x-2)+1=x-(2x-1)
13.11x+64-2x=100-9x
14.14.59+x-25.31=0
15.x-48.32+78.51=80
16.820-16x=45.5×8
17.(x-6)×7=2x
18.3x+x=18
19.0.8+3.2=7.2
20.12.5-3x=6.5
21.1.2(x-0.64)=0.54
22.x+12.5=3.5x
23.8x-22.8=1.2
24.1\ 50x+10=60
25.2\ 60x-30=20
26.3\ 3^20x+50=110
27.4\ 2x=5x-3
28.5\ 90=10+x
29.6\ 90+20x=30
30.7\ 691+3x=700
一元一次方程 有答案
1、x/4=-x/2+3
x/4+x/2=3
3x/4=3
x=4
2、1/2(x*x-y)+1/3(x-y*y)+1/6(x*x+y*y)
=1/2x^2-1/2y+1/3x-1/3y^2+1/6x^2+1/6y^2
=2/3x^2-1/2y+1/3x-1/6y^2
3、x/4=-x/2+3 4、
x/4+x/2=34
3x/4=34
x=34
4、(x+0.5)+x=17
2x=17-0.5
x=8.25
5、x+14/7=x+20/4
4(x+14)=7(x+20)
4x+56=7x+140
3x=-84
x=-28
6、x+15/5=1/2— x—7/3
6(x+15)=15-10(x-7)
6x+90=15-10x+70
16x=-5
x=-5/16
7、-3x=15
x=15/(-3)
x=-5
8、-n/3-2=10
-n/3=12
n=-36
9、3x+3=2x+7
3x-2x=7-3
x=4
10、5/12x-x/4=1/3
5x-3x=4
2x=4
x=2
11、2/3—8x=3-x/2
4-48x=3(3-x)
4-48x=9-3x
-45x=5
x=-1/9
12、0.5x-0.7=6.5-1.3x
0.5x+1.3x=6.5+0.7
1.8x=7.2
x=4
13、3x-6/6=2x/5 -3
5(3x-6)=12x-90
15x-30=12x-90
3x=-60
x=-20
没有答案
1.2(x-2)-3(4x-1)=9(1-x)
2.11x+64-2x=100-9x
3.15-(8-5x)=7x+(4-3x)
4.3(x-7)-2[9-4(2-x)]=22
5.3/2[2/3(1/4x-1)-2]-x=2
6.2(x-2)+2=x+1
7.0.4(x-0.2)+1.5=0.7x-0.38
8.30x-10(10-x)=100
9.4(x+2)=5(x-2)
10.120-4(x+5)=25
11.15x+863-65x=54
12.12.3(x-2)+1=x-(2x-1)
13.11x+64-2x=100-9x
14.14.59+x-25.31=0
15.x-48.32+78.51=80
16.820-16x=45.5×8
17.(x-6)×7=2x
18.3x+x=18
19.0.8+3.2=7.2
20.12.5-3x=6.5
21.1.2(x-0.64)=0.54
22.x+12.5=3.5x
23.8x-22.8=1.2
24.1\ 50x+10=60
25.2\ 60x-30=20
26.3\ 3^20x+50=110
27.4\ 2x=5x-3
28.5\ 90=10+x
29.6\ 90+20x=30
30.7\ 691+3x=700