x+13=2x-58
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x+13=2x-58x+13=2x-58x+13=2x-582x-x=58+13x=717171
x+13=2x-58
x+13=2x-58
x+13=2x-58
2x-x=58+13
x=71
71
71
x+13=2x-58
6x-2x+3x-3x-x=1.2×3
x(2x-1)=-3x(x+1)+5x²+3
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x+2(2x-6)=13
8Xx(2X-1)-2x(X-1)=4X+58
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4x x-2 x -- - -- = -- +1 3 2 64x x-2 x-- - -- = -- +13 2 6
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35道.符号^代表平方.读起来就是(X的平方).1,x^-x-202,x^-9x+203,x^-9x-204,x^+9x+205,x^-18x+326,x^+14x-317,x^+18x+328,x^+14x-329,x^+19x+4810,x^+47x-4811,x^+13x-4812,x^+2x-4813,x^+26x+4814,x^-22x-4815,x^+17x+7216,x^+21x-10017,x^-x-7218,x
计算:[(x+2)/(x+3) - (x+1)/(x+2) + (x+4)/(x+5) - (x+3)/(x+4) / (x^2 + 7x + 13)/(x^2 + 8x + 15)