X+10*3/5X+(X+5)*5=505
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X+10*3/5X+(X+5)*5=505X+10*3/5X+(X+5)*5=505X+10*3/5X+(X+5)*5=505x+6x+5x+25=50512x+25=50512x=480x=40累x
X+10*3/5X+(X+5)*5=505
X+10*3/5X+(X+5)*5=505
X+10*3/5X+(X+5)*5=505
x+6x+5x+25=505
12x+25=505
12x=480
x=40
累
x+6x+5x+25=505
12x+25=505
12x=480
x=40
X+6X+5X+25=505
12X=480
X=40
很简单啊!
X+10*3/5X+(X+5)*5=505
3x²-(2x+5x-1),其中x=10
已知f(x-1)=x²+4x-5则f(x)的表达式是() A x²+6x B x²+8x+7已知f(x-1)=x²+4x-5则f(x)的表达式是()A x²+6xB x²+8x+7C x²+2x-3D x²++6x-10
试解方程:2/(x+1)(x+2) + 2/(x+2)(x+3)+ … +2/(x+10)(x+11)=5x/(x+1)(x+11)
(-x^4)^2-2(x^2)^3×x×x+(-3x)^3×x^5
x+3×(x+1)等于27 7x-2(x-5)=40 6x+4(10-x)=46
x+3×(x+1)等于27 7x-2(x-5)=40 6x+4(10-x)=46
3x(x+2)=5(x+2)
7×【2x-3】+15=2x-5 x=?3x-5=2×【2x-4】 x=?6x【x-2】-10=5×【x+8】 x=?
x+3=5x-3
6.8+12÷x=10.8,14-0.5(x+3)=7.8,3.5x-3x-10=8,7.9-5x=7.8÷210x-20=6x,10+6x=8x,2(x+54)=8x,25-2x=5+2x
解方程3x(5-3x)-36=2x(7-2x)+5x(8-x)
﹣(x²-5-4x)-x(x²+x-1),其中x=-1.先化简再求值
5x-10=1.5x*4+2,求x
数学题(x-4)/(x-3)+(x-6)/(x-5)=(x-8)/(x-7)+(x-10)/(x-9)解方程,(x-4)/(x-3)+(x-6)/(x-5)=(x-8)/(x-7)+(x-10)/(x-9)解方程,
若|x|=7,若|x|=0 则x= 5-3x²+5x-(2x²-3x) (X²-3x+1)(三分之二x²-5x-3)
x+2/x+1=5/x-1/x(x+1) 求化简!
解方程.2.5x=14 3.4x-48=26.8 42x+25x=134 x-7.9=2.6 x解方程.2.5x=143.4x-48=26.842x+25x=134x-7.9=2.6x÷3=1.22x-97=34.213(x+5)=169