Các câu hỏi tương tự
Tìm x trong biểu thức sau:
\(\left(\frac{1}{1x2}+\frac{1}{2x3}+\frac{1}{3x4}+....+\frac{1}{8x9}+\frac{1}{9x10}\right)x100-\left[\frac{5}{2}:\left(x+\frac{206}{100}\right)\right]:\frac{1}{2}=89\)
Tìm X:
(1/1x1+1/2x3+1/3x4+............+1/9x10)x100-[5/2:(X+206/100)]:1/2=89
Bài 1. Tính nhanh :
2/1x2 + 2/2x3 + 2/3x4 + ... + 2/18x19 +2/19x20 .
Bài 2. Tìm x trong biểu thức sau :
( 1/1x2 + 1/2x3 + 1/3x4 + ... + 1/8x9 + 1/9x10 ) x 100 - [5/2 : ( x + 206/100 )] :1/2 = 89
CÁC BẠN GIÚP MÌNH NHA !
1/1x2+1/2x3+1/3x4+...+1/8x9+1/9x10
Tìm X:
a,2xX-5=21
b,3/4+1/4xX=5/6
c,7/8-1/2xX=5/6
d(1/1x2+1/2x3+1/3x4)x100-[5/2:(X+206/100)]:1/2=89
tinh thuan tien
1/1x2+1/2x3+1/3x4+............+1/7x8+1/8x9+1/9x10
( 1/1x2 + 1/2x3 + 1/3x4 + ... + 1/9/10 ) x 100 - ( 5/2 : ( x + 206/100 ) : 1/2 = 89
\(\frac{1}{1x2}+\frac{1}{2x3}+\frac{1}{3x4}+\frac{1}{4x5}+\frac{1}{5x6}+\frac{1}{6x7}+\frac{1}{7x8}+\frac{1}{8x9}+\frac{1}{9x10}\)
a)1,27+2,77+4,27+5,77+...+31,27+32,77
b)1/1x2+1/2x3+1/3x4+1/4x5+1/5x6+1/6x7+1/7x8 +1/8x9+1/9x10
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