Question

Va rog ajutor





[4,5-0,(3)]x 0,8
[1,(3)+0,5]:2,2
[3,5+0,(6)]x 0,6
[1,25+0,(6)]:11,5
[1,75-0,(5)]:21,5
[2,75-2,(6)]x 14,4

Va rog ajutor
Pun coroana !

Answer 1

[4,5-0.(3)]*0.8=[4.(8)]*0.8=4*4/5= 16/5

[1,(3)+0.5]/2,2=[1.(8)]/2.2= 1/2.2

[3,5+0,(6)]*0.6=[4,1(6)]*0.6=4*0.6= 12/5

[1.25+0.(6)]/11.5=[1.91(6)]/11.5= 1/11.5

[1.75-0.(5)]:21.5=[1.194(5)]:21.5= 1/21.5

Answer 2

[tex] (\frac{9}{5} - \frac{1}{3} )* \frac{4}{5} =( \frac{27}{15} - \frac{5}{15} )* \frac{4}{5} = \frac{22}{15} * \frac{4}{5} = \frac{88}{75} \\ ( \frac{4}{3} + \frac{1}{2} )* \frac{11}{5} =( \frac{8}{6} + \frac{3}{6} )* \frac{11}{5} = \frac{11}{6} * \frac{11}{5} = \frac{121}{30} \\ (\frac{7}{2} + \frac{2}{3} )* \frac{3}{5} =( \frac{21}{6} + \frac{4}{6} )* \frac{3}{5} = \frac{25}{6} * \frac{3}{5} = \frac{5}{2} 
O sa le scriu si pe celelalte 3