\(=\dfrac{16+25}{200}\cdot2=\dfrac{41}{100}\)
\((\dfrac{2}{25}+\dfrac{1}{8}).2=(\dfrac{16}{200}+\dfrac{25}{200}).2=\dfrac{41}{200}.2=\dfrac{82}{200}\)
( \(\dfrac{2}{25}\) + \(\dfrac{1}{8}\) ) × 2
= \(\dfrac{16+25}{200}\) x 2
= \(\dfrac{41}{100}\)
\(=\dfrac{16+25}{200}\cdot2=\dfrac{41}{100}\)
\((\dfrac{2}{25}+\dfrac{1}{8}).2=(\dfrac{16}{200}+\dfrac{25}{200}).2=\dfrac{41}{200}.2=\dfrac{82}{200}\)
( \(\dfrac{2}{25}\) + \(\dfrac{1}{8}\) ) × 2
= \(\dfrac{16+25}{200}\) x 2
= \(\dfrac{41}{100}\)
Tìm X
A) X+ 1/4= 5/8
B) X-3/5= 1/10
C) Xx 2/7= 6/11
D) X:3/2 = 1/4
1/1x3 + 1/1x35 + 1/5x7 ............+1/xx(x+2)=8/7
CÁC BẠN ƠI 1 CHỮ x là nhân một chữ x la x nhé !
tinh nhanh
( 25*8+25*2)*( 37*2-75+1)
\(\frac{1}{1x3}+\frac{1}{3x5}+\frac{1}{5x7}+......+\frac{1}{Xx\left(X+2\right)}=\frac{8}{17}\)
Tìm x, biết x là số lẻ
1. tính hợp lí
a, (25/49 x 17/39+22/39x25/49)x41/25 b, 3+3/11+3/23/8+8/11+8/23:9/8-1/3 c, A=2/3x7+2/7x11+2/11x15+......+2/107x111
(1/2+0.25+1/4)nhan ( 1/8+1/2+1/8+25/100) nhan (0.75+1/2)+0.50+1/4+0.55+45/100)
tính tổng 1/2+1/4+1/8+1/8 +1/16 +1/25 giải giúp tôi với
tính nhanh:
19/4 + 37/100 + 1/8 +1/2 + 163/4 + 6/25 + 9/25
Bài 1: Tính một cách hợp lý
a) 2 x 3 x 5 + 25 x 8 x 4 + 70 + 4 x 2 x 25
a)1/1x3+1/3x5+1/5x7+...+1/Xx(x+3)=99/200
b)1/1x3+1/3x5+1/5x7+...+1/Xx(x+2)