hoac sai vi tui moi lop 3

honh phai

11nhan11

22nhan22

33nhan33

co hong phai nhu the

* la dau nhan

: la dau cach giua cac phep thinh

11x11=121

22x22=484

33x33=1089

44x44=1936

55x55=3025

66x66=4356

k mk nhé,1000000%  đúng

11 x 11 = 121

22 x 22 = 484

33 x 33 = 1089

44 x 44 = 1936

55 x 55 = 3025

66 x 66 = 3356

11 x 11 = 121

22 x 22 = 484

33 x 33 = 1089

44 x 44 = 1936

55 x 55 = 3025

66 x 66 = 4356

a. 11 x11= 121 ; 22 x 22=484 , b.44 x 44 = 1936 ; 55 x 55 = 3025

a, 121

b, 484

c, 1089

d, 1936

e, 3025

HT và $$$

a) 121

    484

b) 1089

    1936

    3025

@Nghệ Mạt

#cua

\(\left(x+\dfrac{2}{3}\right)+\dfrac{1}{11}=\left(\dfrac{10}{-33}.\dfrac{11}{8}\right).\dfrac{24}{-55}\)

\(\Rightarrow\left(x+\dfrac{2}{3}\right)+\dfrac{1}{11}=\dfrac{-5}{12}.\dfrac{24}{-55}\)

\(\Rightarrow\left(x+\dfrac{2}{3}\right)+\dfrac{1}{11}=\dfrac{2}{11}\)

\(\Rightarrow x+\dfrac{2}{3}=\dfrac{2}{11}-\dfrac{1}{11}\)

\(\Rightarrow x+\dfrac{2}{3}=\dfrac{1}{11}\)

\(\Rightarrow x=\dfrac{1}{11}-\dfrac{2}{3}\)

\(\Rightarrow x=-\dfrac{19}{33}\)

(x + 2/3) + 1/11 = [10/(-33) . 11/8] . 24/(-55)

(x + 2/3) + 1/11 = -5/12 . 24/(-55)

(x + 2/3) + 1/11 = 2/11

x + 2/3 = 2/11 - 1/11

x + 2/3 = 1/11

x = 1/11 - 2/3

x = -19/33

33x55x(22x3-66)

=33x55x(66-66)

=33x55x0

=0

k mk nha

33x55x(22x3-66)

=33x55x(66-66)

=55x55x0

=0

thấy đúng thì tích nha

33 x 35 x ( 22 x 3 - 66 )

= 33 x 35 x ( 66 - 66 )

= 33 x 35 x 0

= 0

mình hứa sẽ tick

= 2/5 + 1/5 + 1/5

= 4/5

b. = 2/7 + 4/7 + 5/21

= 6/21 + 12/21 + 5/21

= 23/21

HT

0,44 x (\(x+x\times\) 5 - \(\dfrac{23}{55}\)) + \(\dfrac{3}{14}\) x 2,24 = 1

 0,44 x (\(x+x\times\)5 - \(\dfrac{23}{55}\)) + 0,48 = 1

 0,44 x (\(x+x\times\) 5 - \(\dfrac{23}{55}\)) = 1 - 0,48

0,44 x (\(x+x\times5\) - \(\dfrac{23}{55}\)) = 0,52

           \(x+x\times5\) - \(\dfrac{23}{55}\) = 0,52 : 0,44

          \(x\) x (1 + 5) -\(\dfrac{23}{55}\)  = \(\dfrac{13}{11}\)

         \(x\) x 6 - \(\dfrac{66}{10}\) = \(\dfrac{13}{11}\) + \(\dfrac{23}{55}\)

         \(x\) x 6 = \(\dfrac{65}{55}\) + \(\dfrac{23}{55}\)

          \(x\times\) 6 = \(\dfrac{8}{5}\)

         \(x\) x 6 = \(\dfrac{8}{5}\)  : 6

          \(x\)      = \(\dfrac{4}{15}\)

Vậy \(x=\dfrac{4}{15}\)

Lời giải:

$=\frac{39}{154}+\frac{55}{19}=\frac{9211}{2926}$