\(=\left(\dfrac{32}{99}\cdot\dfrac{14}{9}-\dfrac{25}{99}\right)\cdot\dfrac{11}{43}\)
\(=\dfrac{1}{99}\cdot\left(32\cdot\dfrac{14}{9}-25\right)\cdot\dfrac{11}{43}\)
\(=\dfrac{1}{43\cdot9}\cdot\dfrac{223}{9}=\dfrac{223}{3483}\)
[0,(32).1,(5)-0,(25)].11/43
[0,(32).1,(5)-0,2(5)]. 11/83
Tìm x,y biết:
a)\(\left|x-\dfrac{4}{11}\right|+\left|5+y\right|=0\)
b)\(\left|\dfrac{1}{2}-\dfrac{1}{3}+x\right|=\dfrac{-1}{4}-\left|y\right|\)
c)\(\left|x-y\right|+\left|\dfrac{9}{25}+y\right|=0\)
Bài 1 : tìm x
a) \(\dfrac{2012-x}{25}+\dfrac{2053-x}{23}+\dfrac{2070-x}{21}+\dfrac{2083-x}{19}-10=0\\ \)
b) \(x+\dfrac{13}{12}+\dfrac{21}{20}+\dfrac{31}{30}+\dfrac{43}{42}+\dfrac{57}{56}+\dfrac{73}{72}+\dfrac{91}{90}=0\)
1, Tìm a thuộc Z biết :
a, | a | = 1 b, | a | = 0
c, | a | = | -10 | d, -17 . | a | = -85
e, | a | = 5
2, Tìm x thuộc Z
a, ( x2 + 5 ) . ( x2 - 25 ) = 0
b, ( x - 5 ) . ( x2 - 25 ) < 0
tìm x biết :
25(x+1)^4-26(x+1)^2+1=0
x^2+(x-1)=0
\(\dfrac{x+1}{100}\) +\(\dfrac{x+2}{999}+.....+\dfrac{x+6}{995}+5=0\)
4x^2-4x-5(2x-1)-5=0
Tìm x biết:
a. (x - 2).(x + 3/4) > 0
b. (2x - 5).(1 - 3x) > 0
c. (3 - 2x).(x + 1) < 0
d.(5x + 11).(7 - x) < 0
xin hiểu / là phần
a/ 3 và 1/2 - 4/5 - 8 và 1/2 -1/5 -(2021)^0
b 32^5/ 16^5 - (0.2)^100 * (5)^100 -√8181 + /-21/
c 3/2* 16/21 + 3/2 * 5/21 - (- 1/10) ^0 - /-20/
xin hiểu / là phần
a/ 3 và 1/2 - 4/5 - 8 và 1/2 -1/5 -(2021)^0
b 32^5/ 16^5 - (0.2)^100 * (5)^100 -√8181 + /-21/
c 3/2* 16/21 + 3/2 * 5/21 - (- 1/10) ^0 - /-20/
