x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4(x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1

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x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4(x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1

x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4(x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1
x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x
4(x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x
x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7)
13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1
x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-12]
年级

x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4(x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1
X-2=104-X+2
X+X=104+2+2
2X=108
X=54
6X-59=10X-75
6X-10X=-75+59
-4X=-16
X=4
(x+10)+(x-15)=280-x
x+10+x-15=280-x
x+x+x=280-10+15
3x=285
x=95

x-2=(104-x)+2
x-2=104-x+2
x+x=104+2+2
2x=108
x=108÷2
x=54
6x-59=10x-75
10x-6x=75-59
4x=16
x=16÷4
x=4
(x+10)+(x-15)=280-x
x+10+x-15=280-x
x+x+x=280...

全部展开

x-2=(104-x)+2
x-2=104-x+2
x+x=104+2+2
2x=108
x=108÷2
x=54
6x-59=10x-75
10x-6x=75-59
4x=16
x=16÷4
x=4
(x+10)+(x-15)=280-x
x+10+x-15=280-x
x+x+x=280-10+15
3x=285
x=285÷3
x=95

收起

4(x-62)=x-38 →x=70
60x-40=(60+20)*(x-5) →x=18
32x+32*0.5-25x+64x=24x+496-49x→x=5
x+15=3*(109-x )→x=78
5(3x-1.4)=2(6x-0.5)→x=2
3(x+0.9)=5(x-1.7) →x=5.6
13x-4(2x+5)=17(x-2)-4(2x-1)→x=2.5
(13x+8)/3=5x-1→x=11/2
x-60=2[(3561-x)+100]+1→x=2461
(x+9)+12=2[(x-9)-12]→x=63