yx12+yx13-y=4872

yx(12+13-1)=4872

yx24=4872

y=4872:24

y=203

vay y=203

y x 12 + y x 13 - y = 48,72

y x ( 12 + 13 - 1 ) = 48,72

y x 24 = 48,72

y = 48,72 : 24

y = 2,03

y x 12 + y x 13 - y = 4872

 y x 12 + y x 13 - y x 1 = 4872

 y x ( 12 + 13 - 1 ) = 4872

y x 24 = 4872

y = 4872 : 24

y = 203

k mk nha

Mk cảm ơn các bạn nhiều

Thank you very much

( ^ _ ^ )

\(-4872-\left(375-4872\right)+300\)

\(=-4872-375+4872+300\)

\(=-75\)

a) A = -6 . ( -8 + 5 - 4 ) : 3 - 7 . |-2| . 3

    A = -6 . ( -3 - 4 ) : 3 - 7 . 2 . 3

    A = -6 . ( -7 ) : 3 - 14 . 3

    A = 42 : 3 - 42

    A = 14 - 42

    A = -28

Vậy A = -28

b) -4872 - ( 375 - 4872) + 300

= -4872 - 375 + 4872 + 300

= ( -4872 + 4872 ) - ( 375 - 300 )

= 0 - 75

= -75

x=677

x + 2345 - 569 = 2453

x + 2345          = 2453 + 569

x + 2345          = 3022

x                      = 3022 - 2345

x                      = 677

Tính: 6018 x 6 – 2453 x 5 = 

23843

\(=36108-12265=23843.\)

ông đi qua , bà đi lại

tích cho con 1 tích nha

\(3623-45x=2453\)

\(45x=3623-2453\)

\(45x=1170\)

\(x=1170:45\)

\(x=26\)

lam dung roi k di

3623 - 45 . x = 2453

45.x              = 3623 - 2453

45.x              = 1170

     x              = 1170 : 45

     x              =  26

dấu chấm là nhân nhé kb nha

Đáp án C

\(\dfrac{21}{28}=\dfrac{21:7}{28:7}=\dfrac{3}{4}\)

\(\dfrac{18}{54}=\dfrac{18:9}{54:9}=\dfrac{2}{6}=\dfrac{1}{3}\)

\(\dfrac{90}{72}=\dfrac{90:9}{72:9}=\dfrac{10}{8}=\dfrac{5}{4}\)

\(\dfrac{9}{36}=\dfrac{9:9}{36:9}=\dfrac{1}{4}\)

\(\dfrac{30}{48}=\dfrac{30:6}{48:6}=\dfrac{5}{8}\)

\(\dfrac{72}{42}=\dfrac{72:6}{42:6}=\dfrac{12}{7}\)

2453*30000%=735900

tick nha

2453+2424=4877

=4877

ủng hộ nha

2453+24214=4877