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3/4除以x等于1/2怎么算?

解方程 3/4-x=1/2 x=3/4-1/2 x=1/4

1/4除以x等于2/3,也就是说 1/4除以2/3等于x 1/4除以2/3=1/4乘以3/2=3/8

1/2:1/3=1/4:X 1/2X=1/3*1/4 1/2X=1/12 X=1/6

3/4/(3/4/2/5)+1/2 =3/4/(15/8)+1/2 =3/4*8/15+1/2 =2/5+1/2 =9/10

三又八分之三除以x=二又四分之一 x=27/8/(9/4) =27/8*4/9 =3/2 =1又1/2

2/3x÷1/4=12 2/3x÷1/4×1/4=12×1/4 2/3x=3 2/3x÷2/3=3÷2/3 x=9/2

答案等于9/2,二分之九,验算就是2/3×9/2除以1/4等于12。

(3/4)X(1/2)-(3/16)÷(9/4) =3/8-(3/16)X(4/9) =3/8-1/12 =9/24-2/24 =7/24

(x-1)(x-2)(x-3)(x-4) =[(x-1)(x-4)][(x-2)(x-3)] =[x^2-5x+4][x^2-5x+6] =(x^2-5x)^2+10(x^2-5x)+24 =x^4-10x^3+35x^2-50x+24

3/4+1/12减x等于2/3 解:x=3/4+1/12-2/3 x=9/12+1/12-8/12 x=2/12 x=1/6

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