234 : 54 =216( dư 18 )

7654 : 879 =7032( dư 622)

9865 : 54 =9828( dư 37 )

1234 : 23 =1219( dư 15 )

234 : 54 =216( dư 18 )

7654 : 879 =7032( dư 622)

9865 : 54 =9828( dư 37 )

1234 : 23 =1219( dư 15 )

HT

Xin chia buồn với Phương Linh...T^T

98078 : 89 =1102

5643 : 75 =75,24

7654 : 90 =85,0(4)

98078 : 89 = 1102

5643 : 75 = 75,24

7654 : 90 =85,0(4)

a) 1102

b)75 dư 2

c) 85 dư 4

109

5

28944 

103

9876 : 90 = \(\dfrac{1646}{5}\).

543 : 98 = \(\dfrac{543}{98}.\)

432 x 67 = 28944.

8976 : 87 = \(\dfrac{2992}{29}.\)

9876:90= 1646/15

543:98= 543/98

432X67= 28944

8976:87= 2992/29

\(8765\div90=\dfrac{1753}{18}\)\(=97,4\)

\(1325\times65=86125\)

\(6543\div89=73,52\)

♪ chia ra thôi ♪...đợi...a chia ko hết à?

= \(\dfrac{760284}{89}\)

= \(\dfrac{4578}{5}\)

= 1234

báo c

\(\dfrac{12}{6}+\dfrac{15}{7}=\dfrac{84}{42}+\dfrac{90}{42}=\dfrac{174}{42}=\dfrac{29}{7}\)

\(\dfrac{12}{13}-\dfrac{8}{9}=\dfrac{108}{117}-\dfrac{104}{117}=\dfrac{4}{117}\)

\(\dfrac{43}{54}+\dfrac{76}{8}=\dfrac{344}{432}+\dfrac{4104}{432}=\dfrac{4448}{432}=\dfrac{278}{27}\)

\(\dfrac{12}{6}+\dfrac{15}{7}=2+\dfrac{15}{7}=\dfrac{14}{7}+\dfrac{15}{7}=\dfrac{29}{7}\\ \dfrac{12}{13}-\dfrac{8}{9}=\dfrac{108}{117}-\dfrac{104}{117}=\dfrac{4}{117}\\ \dfrac{43}{54}+\dfrac{76}{8}=\dfrac{43}{54}+\dfrac{19}{2}=\dfrac{43}{54}+\dfrac{513}{54}=\dfrac{556}{54}=\dfrac{278}{27}\)

giúp mình với, đi mà T.T

Sao đến bài này là ko ai giúp mình vậy T.T

\(\dfrac{5}{4}\times x=\dfrac{3}{8}+\dfrac{5}{12}\)

\(\dfrac{5}{4}\times x=\dfrac{19}{24}\)

\(x=\dfrac{19}{24}:\dfrac{5}{4}\)

\(x=\dfrac{19}{30}\)

a, 14,7 x 9,5 + 24,6 - 19,24

= 139,65 + 24,6 - 19,24

= 164,25 - 19,24

= 145,01

b, 95,76 + 12,7 x 0,8 - 93

= 95,76 + 10,16 - 93

= 105,92 - 93

= 12,92

c, 156,93 - 12,4 x 8 + 17,95

= 156,93 - 99,2 + 17,95

= 57,73 + 17,95

= 75,68