(1+30%)X+(1+25%)*(960-x)=1228谢谢了,
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(1+30%)X+(1+25%)*(960-x)=1228谢谢了,(1+30%)X+(1+25%)*(960-x)=1228谢谢了,(1+30%)X+(1+25%)*(960-x)=1228谢谢了,原
(1+30%)X+(1+25%)*(960-x)=1228谢谢了,
(1+30%)X+(1+25%)*(960-x)=1228谢谢了,
(1+30%)X+(1+25%)*(960-x)=1228谢谢了,
原式 1.3X+960X1.25-1.25X=1228 0.05X=1228-960X1.25 即0.05X=1228-1200 0.05X=28 X= 28/0.05 X=560
30+25%x:x-30-25%x=1:1
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
30+25%x=1/2x
x加30%x=52、x减40%x=15、50%x加x=31.5、x减1%x=19.8、x加25%x=2.5、x减15%x=8.5
40%x+21=37x-78%x=2.2x+30%x=26(1-25%)x=1540%x-30=152x+20%x=3.3怎么列式计算jijiji40%x+21=37x-78%x=2.2x+30%x=26(1-25%)x=1540%x-30=152x+20%x=3.3
60%x+25=40 x+30%x=52 19-120%x=7 4分之3x-5%x=17.5 x-10%x=18 (1-25%)x=36 2x+30%x=9.2
56-20%X等于多少?解方程还有,X+25%=50 105%X-30%X=96 (1-70%)X=9
x*x+(x+1)(x+1)=25
x/6+x/12+x/20+x/30=1
x-25%x=4.2 2x+30%x=9.2 (1-60%)x=0.32 x-25%x=4.2 2x+30%x=9.2 (1-60%)x=0.32
x除55%=100 60%x=30 x+50%x=4.5 (1-25%)x=72 4x+40%x=176 解方程
x/x+(1-x)/x-1/x
12—120%X=6 5分之3X—5%X=5.5 (1+25%)X=7.5 X—30%X=91 4%X+6%X=29.4 X+25%X=8.75
(x+1)(x+2)(x+3)(x+4)+1(x+1)(x-2)(x+3)(x-4)+25
解方程:x/4=30% 36/x=3/4 10/x=2.5/0.8 x/4=1.2/5 X/1.2=1.5/0.6 x/0.4=1.5/6 x/7=0.6/3.5 x/10=0.1/25-3x=8x+1 2(x-2)+2=x+1 3-x=2-5(x-1) 3x=5(32-x) 7(4-x)=9(x-4) 7x-8=2x+27 5x-18=3-2x (7x-4)+3(x-2)=2x+6 2(3x-4)+(4-x)=4x我是六年级的学生,我希望
求x^2-3x/x^2-6x+9*x^2-11x+30/x^2-5x-1
x^3+x-30(分解因式);x^12-y^12;x^15+x^14+x^13.x^2+x+1
计算:1/X(X+2)+1/(X+2)(X+4)+...+1/(X+28)(X+30)