Question

Tính giá trị của các biểu thức:

a) \(-5,13:\left(5\frac{5}{28}-1\frac{8}{9}.1,25+1\frac{16}{63}\right)\)

b) \(\left(3\frac{1}{3}.1,9+19,5:4\frac{1}{3}\right).\left(\frac{62}{75}-\frac{4}{25}\right)\)

GIẢI ĐẦY ĐỦ GIÚP MK BÀI NÀY VS , MK CAANF RẤT GẤP!

Answer 1

a) \(-5,13:\left(5\frac{5}{28}-1\frac{8}{9}.1,25+1\frac{16}{63}\right)\)

\(=-5,13:\left(\frac{145}{28}-\frac{17}{9}.1,25+\frac{79}{63}\right)\)

\(=-5,13:\left(\frac{145}{28}-\frac{85}{36}+\frac{79}{63}\right)\)

\(=-5,13:\frac{57}{14}\)

\(=-\frac{63}{50}\)

b) \(\left(3\frac{1}{3}.1,9+19,5:4\frac{1}{3}.\left(\frac{62}{75}-\frac{4}{25}\right)\right)\)

\(=\left(\frac{10}{3}.1,9+19,5:\frac{13}{3}\right).\left(\frac{62}{75}-\frac{4}{25}\right)\)

\(=\left(\frac{19}{3}+\frac{9}{2}\right).\frac{2}{3}\)

\(=\frac{65}{6}.\frac{2}{3}\)

\(=\frac{65}{9}\)

 ^...^  ^_^

Answer 2

a) -5,13:(5/5/28-85/36+1/16/63)

     -5,13:(355/126+79/63)

      -5,13:57/14

       =-126

B(19/3+9/2).2/3

65/6.2/3

= 65/9

    

Answer 3

ngu như cho máy tính đâu

Answer 4