X-7-98+7X=3.2×5XX-7-98+7X=3.2×5X
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X-7-98+7X=3.2×5XX-7-98+7X=3.2×5XX-7-98+7X=3.2×5XX-7-98+7X=3.2×5XX-7-98+7X=3.2×5XX-7-98+7X=3.2×5XX-7-
X-7-98+7X=3.2×5XX-7-98+7X=3.2×5X
X-7-98+7X=3.2×5X
X-7-98+7X=3.2×5X
X-7-98+7X=3.2×5XX-7-98+7X=3.2×5X
X-7-98+7X=3.2×5X
8X -105 =16X
8X = -105
X = -13.125( 或 - 13又1/8 )
x-7-98+7x=3.2×5x
x+7x-105=16x
8x-16x=105
-8x=105
x=-13.125
X=-13.125
7/xx+x+1/xx-1=2/xx-x
解方程1/(xx+x)+1/(xx+3x+2)+1/(xx+5x+6)+1/(xx+7x+12)+1/(xx+9x+20)=5/(xx+11x-7
解方程1/(xx+x)+1/(xx+3x+2)+1/(xx+5x+6)+1/(xx+7x+12)+1/(xx+9x+20)=5/(xx+11x-708)
解方程2xX(7--2x)+5xX(8--x)=3xX(5--3x)--39
X-7-98+7X=3.2×5XX-7-98+7X=3.2×5X
7/(XX+X)+1/(xx-x) =6/(xx-1)
解分式方程7/(XX+X)+1/(xx-x) =6/(xx-1)
7/(XX+X)+1/(xx-x) =6/(xx-1)
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