Question

f) (11 supra 12 - 7 supra 15) x 10 supra 9 + 1 supra 2

Answer 1

(11/12- 7/15)×10/9 +1/2= * aducem la acelasi numitor, amplificam 11.12 cu 5 si 7/15 cu 4*
55-28totul supra 60 × 10/9 +1/2=
27/60 × 10/9 +1/2= * simplificam*
1/2+1/2= 
2/2=1