Question

tính:

a).3/5+11/20

b).5/8-4/9

c).9/16x4/3

ai làm đầy đủ các bước tính mik tick.lẹ lẹ đi

Answer 1

a) \(\frac{3}{5}+\frac{11}{20}=\frac{12}{20}+\frac{11}{20}\)

                        \(=\frac{23}{20}\)

b) \(\frac{5}{8}-\frac{4}{9}=\frac{45}{72}-\frac{32}{72}\)

                    \(=\frac{13}{72}\)

c) \(\frac{9}{16}\times\frac{4}{3}=\frac{9\times4}{16\times3}\)

                       \(=\frac{36}{48}=\frac{3}{8}\)

Answer 2

a)=23/20

b)=13/72

c)3/4

Answer 3

a, 3/5 + 11/20= 12/20 + 11/ 20= 23/20

b, 5/8-4/9= 45/72 - 32/72 =13/12

c, 9/16x4/3 = 9x4/16x3 =36/48 =3/4

Answer 4

a ) 3/5 + 11/20 = 12/20 +11/20 = 23/20

b ) 5/8 - 4/9 = 45/72 - 32/72 = 13/72

c ) 9/16 x 4/3 =36/48=3/4

Answer 5

a).3/5+11/20=12/20+11/20=23/20

b).5/8-4/9=45/72-32/72=13/72

c).9/16x4/3=36/48=3/4

Answer 6

a) 115/100   B) 13/72.  c) 36/48

Answer 7

Ko biết đúng chưa😋😋😋😋😋😋