(-9)X(+2/5)=多少,
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(-9)X(+2/5)=多少,
(-9)X(+2/5)=多少,
(-9)X(+2/5)=多少,
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
(-9)X(+2/5)=多少,
x^2+6x-9=4 x=多少
1x+2x=9 x等于多少
X-2/5X=14 X=多少啊
-x^2+3x+5=0 x=多少?
2X-3/5=X/3 X等于多少?
5x+2=3x,x等于多少
5x+2=100+3x x等于多少
2x=5x,x等于多少?
5x-332=2x+4 x等于多少
2x(5x+3)=3x(5x+3x)中x等于多少
5x²+x=-2 算x等于多少 x²+x=1 算x等于多少
9x+5=8x-2;x=多少,给个过成
5(2x+2)²=9x² x为多少
5x-9=8x-1-2x等于多少?
x+1/x+2 + x+6/x+7 =x+2/x+3 + x+5/x+6 多少了!
(x+2)(x+8)=(x+3)(x+9) 解x=多少