x:0.35=0.5:1.05
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0.5*x+0.35*(50-x)=19.60.5x+17.5-0.35x=19.60.5x-0.35x=19.6-17.50.15x=2.1x=14
x-0.5x=20+0.3xx-0.5-0.3x=200.2x=20x=20÷0.2x=100
0.5x+(5x+20)*0.5=298x==>x+(5x+20)=298*2==>6x+20=298*2==>6x+20=596==>6x=576==>x=96
[x-x/(x+1)][(x+1)/(x^2+4x+4)][(x^2-4)/(x^2-2x)]=[x^2/(x+1)][(x+1)/(x+2)^2][(x+2)(x-2)/x(x-2)]=x/(x+2
0.5分之x=0.3分之x-180.3X=0.5(x-18)0.2X=9X=45再问:过程再详细一点,谁除谁都写下来,要不不明白
6X-(360X-0.5X)=2×(360X-0.5X)6X-359.5X=2×359.5X(2×359.5+359.5-6)X=0X=0÷(2×359.5+359.5-6)X=0
0.35x+0.25×(32-X)=10.40.35x+8-0.25x=10.40.35x-0.25x=10.4-80.1x=2.4x=2.4÷0.1x=24
(X+X)+(X-X)+(X*X)+(X/X)=1002X+0+X*X+1=1002X+X*X=99X(X+2)=99X=9再问:请问X(X+2)=99解为什么就等于9了呢没看懂再答:换成算术法你就明
(1-30%x)×0.5=0.35解1*0.5-30%x*0.5=0.350.5-0.25x=0.340.5-0.34=0.25x0.16=0.25xx=0.64
1.5x=30x=20再问:过程再答:x+0.5x=301.5x=30x=20
9x=0x=0
再答:采纳啊。再答:谢谢。
0.5(500-x)-0.5x=237.5x250-0.5x-0.5x=237.5x237.5x+x=250238.5x=250x=250÷238.5x≈1.05
把0.5x在移变号为-0.5x,加上-0.5x+8x=7x,然后就变成7x=21,两边同时除以7,得到x=3先把55%换成0.55,向左移变为-0.55y+1.6y=5+100,即1.05y=105,
∵X=-0.5∴(X-4)(x-2)-2(X-1)(X+3)=x²-6x+8-2(x²+2x-3)=x²-6x+8-2x²-4x+6=-x²-10x+
再问:15=3.5X一0.5XX=?再答:
别废话了,HI里查收
x+2.4=1.05x1.05X-X=2.40.05X=2.4X=48
3.14*0.5x³=50x³=100/3.14x约等于3.170
X:1.05=27:0.350.35x=1.05*270.35x=28.35x=28.35÷0.35x=81有不明白的地方欢迎追问.