Question

Va rog ajutatima sa scriu sub forma de fractii numerele -0,72 5,36 -0,(42) -3,(18) 0,5(3) 12,3(45) -7,6(543) va rog ajutatima

Answer 1

     
[tex]\displaystyle -0,72 = -\frac{72}{100}= -\frac{18}{25}\\ 5,36 = \frac{536}{100} =\frac{134}{25}\\ -0,(42) =- \frac{42}{99} =- \frac{14}{33} \\ -3,(18) = -\frac{318-3}{99}= -\frac{315}{99} = -\frac{35}{11}\\ 0,5(3) = \frac{53-5}{90}= \frac{48}{90}=\frac{8}{15}\\ 12,3(45) = \frac{12345-123}{990}=\frac{12222}{990} =\frac{679}{55}\\ -7,6(543) =-\frac{76543-76 }{9990}= -\frac{76467}{9990} = -\frac{25489}{3330}[/tex]

Answer 2

$\displaystyle -0,72=- \frac{72}{100} ^{(4} =- \frac{18}{25} \\ \\ 5,36= \frac{536}{100} ^{(4} = \frac{134}{25} \\ \\ -0,(42)=- \frac{42}{99} ^{(3} =- \frac{14}{33} \\ \\ -3,(18)=- \frac{318-3}{99} =- \frac{315}{99} ^{(9} =- \frac{35}{11} \\ \\ 0,5(3)= \frac{53-5}{90} = \frac{48}{90} ^{(6} = \frac{8}{15} \\ \\ 12,3(45)= \frac{12345-123}{990} = \frac{12222}{990} ^{(18} = \frac{679}{55}$

$\displaystyle -7,6(543)=- \frac{76543-76}{9990} =- \frac{76467}{9990} ^{(3} = -\frac{25489}{3330}$