8(x-6.2)= 5.4x+x=12.8
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8(x-6.2)= 5.4x+x=12.8
8(x-6.2)= 5.4x+x=12.8
8(x-6.2)= 5.4x+x=12.8
5.4x+X=12.8
6.4x=12.8
x=12.8÷6.4
x=2
8(x-6.2)=8x-49.6=8×2-49.6=16-49.6=-33.6
8(x-6.2)= 5.4x+x=12.8
1.(1/X-1 )-2=X^-3X/X^-12.(X/X+1)^+5(X/X+1)+6=03.(8(X^+2X)/X^-1)+ 3(X^-1)/X^+2x
(x+x)+(x-x)+(x/x)=11.2
x的平方+( )x+16=(x+ )(x+8)
x+2/x+3-x+1/x+2=x+8/x+9-x+7/x+8
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
解比例(务必在今晚8点前)(x-0.4x+360):x=3:4 x-40%x+360:x=3:4
13.2x+9x=33.3 8x-3X=105 5.4x+x=12.8 x-0.13.2x+9x=33.38x-3X=105 5.4x+x=12.8x-0.36x=16
3×(x+1)+4x+8=4(x+1)+5x-7
x²-4x=8 (x+3)(x-2)=14
x²-4x=8 (x+3)(x-2)=14
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x-
8x+4=32.(X+3)/6=9X=?X=?
(X+X)+(X-X)+(X*X)+(X/X)=100
x+5/x+1-3x-3/x+5=8x+28/x^2+4X-5-2(x+5)/(x+1)-(3x-3)/(x+5)=(8x+28)/(x^2+4X-5)-2
x^-16/(x^+8x+16) +x/(x-4)