x/3+(100-x)*2=100解方程x/3+(100-x)*2=100 2(x-3)+3(2x-1)=5(x+3) 7-x/4=x-3 4(x+5)=2-3(2x-7) 3(x+13)-5(1-x)=13(x-1) 3(x-2)=2-5(x-2) 3(x+1)-2(x+2)=2x-3 3(x-2)+1=x-(2x-1) x/2=3x-1 3/4x-0.4=1/2x+0.3 3-1.2x=4/5x-12 1/2(x-3)=2-1/2(x-3) 4(2x-1)-2(x-1)=22 5

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x/3+(100-x)*2=100解方程x/3+(100-x)*2=1002(x-3)+3(2x-1)=5(x+3)7-x/4=x-34(x+5)=2-3(2x-7)3(x+13)-5(1-x)=13

x/3+(100-x)*2=100解方程x/3+(100-x)*2=100 2(x-3)+3(2x-1)=5(x+3) 7-x/4=x-3 4(x+5)=2-3(2x-7) 3(x+13)-5(1-x)=13(x-1) 3(x-2)=2-5(x-2) 3(x+1)-2(x+2)=2x-3 3(x-2)+1=x-(2x-1) x/2=3x-1 3/4x-0.4=1/2x+0.3 3-1.2x=4/5x-12 1/2(x-3)=2-1/2(x-3) 4(2x-1)-2(x-1)=22 5
x/3+(100-x)*2=100解方程
x/3+(100-x)*2=100 2(x-3)+3(2x-1)=5(x+3) 7-x/4=x-3 4(x+5)=2-3(2x-7)
3(x+13)-5(1-x)=13(x-1) 3(x-2)=2-5(x-2) 3(x+1)-2(x+2)=2x-3
3(x-2)+1=x-(2x-1) x/2=3x-1 3/4x-0.4=1/2x+0.3 3-1.2x=4/5x-12
1/2(x-3)=2-1/2(x-3) 4(2x-1)-2(x-1)=22 5x-2(x-5)=52 6x-3(x+4)=48

x/3+(100-x)*2=100解方程x/3+(100-x)*2=100 2(x-3)+3(2x-1)=5(x+3) 7-x/4=x-3 4(x+5)=2-3(2x-7) 3(x+13)-5(1-x)=13(x-1) 3(x-2)=2-5(x-2) 3(x+1)-2(x+2)=2x-3 3(x-2)+1=x-(2x-1) x/2=3x-1 3/4x-0.4=1/2x+0.3 3-1.2x=4/5x-12 1/2(x-3)=2-1/2(x-3) 4(2x-1)-2(x-1)=22 5
1、x/3+(100-x)*2=100 2、2(x-3)+3(2x-1)=5(x+3) 3、7-x/4=x-3
x+600-6x=300 2x-6+6x-3=5x+15 28-x=4x-12
300=5x 3x=12 40=5x
x=60 x=4 x=8
4、4(x+5)=2-3(2x-7) 5、3(x+13)-5(1-x)=13(x-1) 6、 3(x-2)=2-5(x-2)
4x+20=2-6x+21 3x+39-5+5x=13x-13 3x-6=2-5x+10
10x=3 -5x=-47 8x=18
x=0.3 x=9.4 x=2.25
7、3(x+1)-2(x+2)=2x-3 8、3(x-2)+1=x-(2x-1) 9、x/2=3x-1
3x+3-2x-4=2x-3 3x-6+1=x-2x+1 x=6x-2
-x=-2 4x=6 2=5x
x=2 x=1.5 x=0.4
10、3/4x-0.4=1/2x+0.3 11、3-1.2x=4/5x-12 12、 1/2(x-3)=2-1/2(x-3)
3x-1.6=2x+0.6 15=2x x-3=4-x+3
x=2.2 x=7.5 2x=10
x=5
13、4(2x-1)-2(x-1)=22 14、5x-2(x-5)=52 15、6x-3(x+4)=48
8x-4-2x+2=22 5x-2x+10=52 3x=60
6x=24 3x=42 x=20
x=4 x=14

7-x/4=x-3得5x=40 ,解得:x=8

太多了。