列 :8x-4=9x+7解:8x-9x=7+4 -x=11 x=-11
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列 :8x-4=9x+7解:8x-9x=7+4 -x=11 x=-11
题:1 .5x-(3x-7)=2+(3-2x)
2 .6x+2=4x-5
3 .3x+18 =5x-4(3-2x)
正确率要保证哦~
题:1 .5x-(3x-7)=2+(3-2x)
2 .6x+2=4x-5
3 .3x+18 =5x-4(3-2x)
正确率要保证哦~
1 .5x-(3x-7)=2+(3-2x)
5x-3x+7=2+3-2x
2x+2x=5-7
4x=-2
x=-0.5
2 .6x+2=4x-5
6x-4x=-5-2
2x=-7
x=-7/2
x=-3.5
3 .3x+18 =5x-4(3-2x)
3x-5x=-12+8x-18
-2x-8x=-30
-10x=-30
x=3
5x-3x+7=2+3-2x
2x+2x=5-7
4x=-2
x=-0.5
2 .6x+2=4x-5
6x-4x=-5-2
2x=-7
x=-7/2
x=-3.5
3 .3x+18 =5x-4(3-2x)
3x-5x=-12+8x-18
-2x-8x=-30
-10x=-30
x=3
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
X 7 X - X 7 X = X 9 8 X 9 X - X 9 X = 4 9
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
求方程解x-5/x-4+x-9/x-8=x-8/x-7+x-6/x-5
解方程】(x+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
解分式方程:(x-4)/(x-5)+(x-8)/(x-9)=(x-7)/(x-8)+(x-5)/( x-6)
解分式方程(X-4)/(X-5)-(X-5)/(X-6)=(X-7)/(X-8)-(X-8)/(X-9)
解方程:(x-4)/(x-5)-(x-5)/(x-6)=(x-7)/(x-8)-(x-8)/(x-9)
解方程:x-4/x-5 -x-5/x-6=x-7/x-8 -x-8/x-9
解因式方程:x-4/x-5+x-8/x-9=x-7/x-8+x-5/x-6