4/5÷x=1/6÷20%
先化简,再求值(1)1/x-3÷x-4/x²-6x+9+1-x/x+4,其中x=5
15X÷2=60 4X+X=3.15 3.4X+1.8=8.6 5X-X=2.4 1.5X-X=1 6.6X-6X=1.
当x=9/2时,求(x^2+7x+10)/(x^2+6x+5)×(x^3+1)/(x^2+4x+4)÷(x^2-x+1)
已知(x-根号2+1)(x-2)=0,求代数式[(x-1)/(x-3)-(x-4)/x]÷(x^2+x-6)/(x^2+
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
1. x+0.5x=6 4x+16=40 x/5=32% x-4/9x=10/21 x-1/8x=5/8 7x÷2=2.
先化简,再求值 2x-6/4-4x+x^2÷x-3/x-2,其中x=-1
(x+1)(x²-x+1)+6x³÷(-2x²)+(-x^6)÷x^4,其中x=-2
已知x=√2+1,求(x²+x-6)/(3-x)×(2x-6)/(x²-4x+4)÷(x+3)
先化简,再求值(2x-6)/(4-4x+x^2)÷ (x+3)× (x^2+x-6)/(3-x),其中x=-1/2
已知x^2-3x=2x+14求(4x^3-6x^2+2x)÷(2x)-(x+1)^2+1的值
x-(1/5+1/5)x-39=39 x-1/4x-2/5x=112 x-1/6x-1/3x-12=20