Question

-1,5+[-0,58(3)+0,8(3)] :(-0,08(3) se obtine

Answer 1

Răspuns

0,58(3) = (583-58)/900 = 525/900 = 7/12 ; 0,8(3) = (83-8)/90 = 5/6 ;

-1,5+[-0,58(3)+0,8(3)]:(-0,8(3)) =

-1,5+(5/6-7/12)x6/5 =

-1,5+[(10-7)/12]x6/5 =

-1,5+(3/12)x6/5 =

-3/2+18/60 =

3/10-3/2 =

(3-15)/10 =

-12/10 = -1,2