Question

scrie sub form de fractie numerele b)-0,72;5,36; -0,(42); -3,(18); 0,5(3);12,3(45);-7,6(543)​

Answer 1

$- 0.72 = - \frac{72}{100} = \frac{36}{50} = \frac{18}{25}$

$5.36 = \frac{536}{100} = \frac{268}{50} = \frac{134}{25}$

$- 0.(42) = - \frac{42}{99} = - \frac{14}{33}$

$- 3.(18) = - \frac{318 - 3}{99} = - \frac{315}{99} = - \frac{105}{33} = - \frac{35}{11}$

$0.5(3) = \frac{53 - 5}{90} = \frac{48}{90} = \frac{16}{30} = \frac{8}{15}$

$12.3(45) = \frac{12345 - 123}{990} = \frac{12222}{990} = \frac{6111}{495} = \frac{2037}{165} = \frac{679}{55}$

$- 7.6(543) = - \frac{76543 - 76}{9990} = - \frac{76467}{9990} = - \frac{25489}{3330}$