a) ( -32 ) . ( -56 ) + 32.44

= 32 . 56 + 32 . 44 

= 32  . ( 56 + 44 )

=  32 . 100

= 3200

b) Làm tương tự như phần a nhé !

Kết bạn nhé !

a) \(\left(-32\right)\cdot\left(-56\right)+32\cdot44\)

\(=32\cdot56+32\cdot44\)

\(=32\cdot\left(56+44\right)\)

\(=32\cdot100\)

\(=3200\)

b) \(\left(-59\right)\cdot\left(-56\right)-59\cdot53\)

\(=59\cdot56-59\cdot53\)

\(=59\cdot\left(56-53\right)\)

\(=59\cdot3\)

\(=177\)

https://www.google.com.vn/search?q=google+calculator&rlz=1C1GGRV_enVN751VN751&oq=google+cal&aqs=chrome.2.0j69i57j0l4.5783j0j7&sourceid=chrome&ie=UTF-8

Vào đó tính

32 . 75 + 68 . 84 + 65 . 32 + 68 . 56

= 32 . ( 75 + 65 ) + 68 . ( 84 + 56 )

= 32 . 140 + 68 . 140

= 140 . ( 32 + 68 )

= 140 . 100

= 14000

32 x 75 + 68 x 84 + 65 x 32 + 68 x 56

= ( 32 x 75 ) + ( 65 x 32 ) + ( 68 x 84 ) + ( 68 x 56 )

= 32 x ( 75 + 65 ) + 68 x ( 84 +56 )

= 32 x 140 + 68 x 140

= 140 x ( 32 + 68 ) 

= 140 x 100

= 14000

kết quả là 107

k cho mình nhé

=107 nha bn!!!!

k mk vs đi nha!!!

24 x 45 x 56/32 x 36 x 64  =

= 105/128

Hii ( : 3

(55x32)/ (33x56)

= (5x4) / (3x7)

=20/21

Trả lời: 20/21

20/21

bạn rút gọn tử với mẫu 

nha

tíc mình

nha

\(\dfrac{1}{3}+\dfrac{1}{7}+\dfrac{1}{5}+\dfrac{32}{40}+\dfrac{48}{56}+\dfrac{14}{21}\\ =\dfrac{1}{3}+\dfrac{1}{7}+\dfrac{1}{5}+\dfrac{4}{5}+\dfrac{6}{7}+\dfrac{2}{3}\\ =\left(\dfrac{1}{3}+\dfrac{2}{3}\right)+\left(\dfrac{1}{7}+\dfrac{6}{7}\right)+\left(\dfrac{1}{5}+\dfrac{4}{5}\right)\\ =1+1+1=3\)

Lời giải:

$\frac{1}{3}+\frac{1}{7}+\frac{1}{5}+\frac{32}{40}+\frac{48}{56}+\frac{14}{21}$

$=\frac{1}{3}+\frac{1}{7}+\frac{1}{5}+\frac{4}{5}+\frac{6}{7}+\frac{2}{3}$

$=(\frac{1}{3}+\frac{2}{3})+(\frac{1}{7}+\frac{6}{7})+(\frac{1}{5}+\frac{4}{5})$

$=\frac{3}{3}+\frac{7}{7}+\frac{5}{5}=1+1+1=3$