x除以0.2减去0.5 0.02x除以0.03=3.6
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x/(y-x)
左右同乘24去掉分母即8x+20-(9x-6)=2426-x=24x=2
(x÷0.4)-(2×5.3)=30.4x÷0.4-10.6=30.4x÷0.4=30.4+10.6x÷0.4=41x=41×0.4x=16.4
图再问:对么再答:对再问:◥◤~~~~◥◤ ┃ ┃≡━﹏━≡ ┗━━┳∞┳━━┛ ┏┫ ┣┓再答:谢谢采纳再答:Thankyou
x=y*y/(y-1)y=4x=16/3y=5x=25/4y=6x=36/5...
x/(x-1)-2x-2/x=x²/x(x-1)-2x²(x-1)/x(x-1)-2(x-1)/x(x-1)=(-2x³+3x²-2x+2)/x(x-1)
90/X-90/3X=3270/3X-90/3X=3160/3X=3180=9XX=20再问:请再帮帮忙吧:解方程2.4∕5X-2.4∕6X﹦1.6再答:2.4∕5X-2.4∕6X﹦1.614.4/X
4x/(2x-1)-(x+1)/(x-2)=1先通分[4x(x-2)-(x+1)(2x-1)]/[(2x-1)(x-2)]=14x2-8x-(2x2+x-1)=2x2-5x+2x=-1/4其中x2代表
是不是X除以3减去4等于x除以4减去1X*1/3-4=X*1/4-1X/3-4=X/4-1X/3-X/4=34X-3X=36X=36
x=(√20-4)/2=(2√5-4)/2=√5-2所以x²=(√5)²-4*√5+4=9-4√51/x=1/(√5-2)=(√5+2)/[(√5)²-2²]=
(x^3-27)/(x-3)使用立方差公式分解因式(x^3-27)=(x-3)(x^2+3x+9)/(x-3)=(x^2+3x+9)
就是(x/200)-(x/250)=15两边同乘以10005x+4x=15000x=15000
x-5÷2.5=3.8x-2=3.8x=5.8
x^2+1/x^2-1减去x-2/x-1除以x-2/x=(x²+1)/(x²-1)-(x-2)/(x-1)÷(x-2)/x=(x²+1)/(x²-1)-x/(x
75-6.5/x=656.5x=75-656.5/x=1010x=6.5x=0.65
(0.5x-0.6)÷0.2=100.5x-0.6=10×0.2=20.5x=0.6+2=2.6x=2.6÷0.5x=5.2