Tìm x biết :
20 - [ 2,04 : ( X + 1,05 ) ] : 0,12 = 11,5
* [ ...........] là ngoặc lớn
( .........) là ngoặc nhỏ
Những câu hỏi liên quan
Tìm x:
20 - ( 2,04 : ( x + 1,05 )) :0,12 = 11,5
8) 20 - [2,04 : (x + 1,05)] : 0,12 = 11,5.
9) (y + 1) + (y + 2) + (y + 3) + ……….+ (y + 50) = 685.
Tìm x
a) [(3.x-3/5):0,75].1/2/3+1/3=1
b) 1999.2001-1/1998+1999.2000 . 7/5.x=1
c) 11,13 + 13,15 + 15,17 + ... +31,33 = 5.x+11,13
d) (x+1,75):0,12=1+2-3+4-5+6- ... +118-119+120
e) (2/11.13 + 2/13.15 + ... + 2/19.21 ) . 462 - [2,04 : ( x + 1,05 ) ] : 0,12 = 11,5
(2/11x13 +2/13x15 +...+2/19x21)x426-(2,04:(x+1,05)):0,12=19
tìm x hộ mình nhé
Tìm x biết : \(\left(\frac{2}{11\cdot13}+\frac{2}{13\cdot15}+....+\frac{2}{19\cdot21}\right)\cdot462-\left(2,04:\left(x+1,05\right)\right):0,12=19\)
Tìm x, biết:
\(\left(\frac{2}{11.13}+\frac{2}{13.15}+...+\frac{2}{19.21}\right).462-\left[2,04:\left(x+1,05\right)\right]:0,12=19\)
Tìm x biết:
\(\left(\frac{2}{11.13}+\frac{2}{13.15}+...+\frac{2}{19.21}\right).462-\left[2,04:\left(x+1,05\right)\right]:0,12=19\)
(2/11.13+2/13.15+.......+2/19.21).462 -{2,04:(x+1,05):0,12=19
\(\left(\frac{2}{11.13}+\frac{2}{13.15}+...+\frac{2}{19.21}\right).462-\left[2,04:\left(x+1,05\right):0,12\right]=19\)
\(\Leftrightarrow\left(\frac{1}{11}-\frac{1}{13}+\frac{1}{13}-\frac{1}{15}+...+\frac{1}{19}-\frac{1}{21}\right).462-\left[2,04:\left(x+1,05\right):0,12\right]=19\)
\(\Leftrightarrow\left(\frac{1}{11}-\frac{1}{21}\right).462-\left[2,04:\left(x+1,05\right):0,12\right]=19\)
\(\Leftrightarrow\frac{10}{231}.462-\left[2,04:\left(x+1,05\right):0,12\right]=19\)
\(\Leftrightarrow20-\left[2,04:\left(x+1,05\right):0,12\right]=19\)
\(\Leftrightarrow2,04:\left(x+1,05\right):0,12=1\)
\(\Leftrightarrow2,05:\left(x+1,05\right)=0,12\)
\(\Leftrightarrow x+1,05=\frac{205}{12}\)
\(\Leftrightarrow x=\frac{205}{12}-1,05\)
\(\Leftrightarrow x=\frac{481}{30}\)
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Tim x
(2/11.13+2/13.15+...+2/19.21).462-[2,04:(x+1,05)]:0,12=19
Sao mk câu hỏi của bạn dùng mà tốn giấy vậy, tiết kiệm chút đi
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