100.(x-1)-5=5
100.(x-1) =5+5
100.(x-1) =10
x-1 =10:100
x-1 =0,1
x =0,1+1=1,1
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4x5^100 x ( 1/5 + 1/5^2 + 1/5^3 + ...... + 1/5^99 + 1/5^100 ) + 1 Các bạn giúp mình với!!!
-12(x-5)+7(3-x)=5 30(x+2)-6(x-5)-24x=100
(x+1-5)+7(3-x)=5 30(x+2)-6(x-5)-24x=100
(x+1)+(x+3)+(x+5)+........+(x+99)=0
\(5^x+5^{x+1}+5^{x+2}=100.....0:2^{18}\)
cai 100....00 la 14 chu so 0 nhe
1
a)X*3/5=2/3
b)3/8-1/6*x=1/4
c)1/2+1/2:x=1
d ( 1/8+1/24+1/48+1/80+1/120)*(x-1/2)=25/26
e ) (x-5)*30/100=20/100*x+5
tim x biet
1) 23x-1=32
2) 4.52x=5^7-5^6
3) x3(x2-1)=0
4) x100=x48
5) x100=x
6) x100=x2
7) (x-2015)2105=1
8) 100(x-3).(x-2)=1
1, Tính \(\frac{1}{2}-\left(\frac{1}{3}+\frac{2}{3}\right)+\left(\frac{1}{4}+\frac{2}{4}+\frac{3}{4}\right)-\left(\frac{1}{5}+\frac{2}{5}+\frac{3}{5}+\frac{4}{5}\right)+...+\left(\frac{1}{100}+\frac{2}{100}+\frac{3}{100}+...+\frac{99}{100}\right)\)2,Tính \(\left(1-\frac{1}{2^2}\right)x\left(1-\frac{1}{3^2}\right)x\left(1-\frac{1}{4^2}\right)x...x\left(1-\frac{1}{n^2}\right)\)
tim x biet
a)2^x+2 -2^x=96
b)x-(50x/100+25x/200)=111/4
c) (x-5).30/100=200x/100+5
5x-1-5x=100. Tìm x
5x-1+5x =100