X-5+8*X=7*X-2*X-1
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X-5+8*X=7*X-2*X-1X-5+8*X=7*X-2*X-1X-5+8*X=7*X-2*X-1变形得9X—5=5X—1得4X=4得X=1x=1①50(x+0.2)=60(x-1),50x+10
X-5+8*X=7*X-2*X-1
X-5+8*X=7*X-2*X-1
X-5+8*X=7*X-2*X-1
变形得9X—5=5X—1
得4X=4
得X=1
x=1
① 50(x+0.2)=60(x-1), 50x+10=60x-60, 10x=70, x=7. ②50(x-2+8)=(50+10)(x-2-7), 50(x+6)=60(x-9), 50x+300=60x-540, 10x=840, x=84.
这样可以么？
X=1
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填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
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,
求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X
X-5+8*X=7*X-2*X-1
1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8 好多年没有用过过数学公式了 想不起来怎么算了 想知道 X值是多少
已知x=2π+1求 |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x-9|+|x-10|
已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10)
如果1+x+x^2+x^3=0,求x+x^2+X^3+x^4+x^5+x^6+x^7+x^8的值,
1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11=17.7这个方程怎么样求解?
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
x-2/x-1+x-8/x-7=x-4/x-3+x-6/x-5
(X+2)/(X+1)-(X+4)/(X+3)=(X+6)/(X+5)-(X+8)/(X+7)
解方程 (x+2)/(x+1) - (x+4)/(x+3)=(x+6)/(x+5)-(x+8)/(x+7)
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7
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