x-5%x=60 30%x+12=75 20%x+2.6=8
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x-5%x=60 30%x+12=75 20%x+2.6=8
x-5%x=60 30%x+12=75 20%x+2.6=8
x-5%x=60 30%x+12=75 20%x+2.6=8
x-5%x=60 30%x+12=75 20%x+2.6=8
(4/x-5)+(x-3)/(12-x)=(x-45)/(x^2-17x+60)
x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4(x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1
X-X/12-X/7-X/8-X/4-X/20-X/5-30-120-300=50解方程
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
60x(x-4)=30x
60%X + 80%X - 12 = X
(x+30)*(x-18)=x*x
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-16x=30x*x-7x-15 求x,可以只要答案.如图,全是正方形,一个边长为1,一个边长为4,求总面积,你也可以用你的方法.上面那个方程是我列的.5x*X+7X-72=0
12x(x+x)=60 X=?
(X+X)+(X-X)+(X*X)+(X/X)=100
x-60%x-25%x=25%x-30
x/6+x/12+x/20+x/30=1
30(x+5)=26x+10x(x+5)
x*x-(x-2)*(x-5)=60
x+(30-x)=60
12-x=60%x