Question

URGENT!!!a și b. Dau 40 de puncte!!!Ambele!!!

Answer 1

0,6·1 1/9 - 7/9 : (2 - 1/4) =

= 6/10·10/9 - 7/9 : [(8-1)/4]

= 6/9 - 7/9·4/7

= 6/9 - 4/9

= 2/9

(3 8/9 - 1,5) : (3 1/2 + 0,8) + 2,(4) =

= (35/9 - 15/10) : (7/2 + 8/10) + 22/9

= [(350 - 135)/90] : (7/2 + 4/5) + 22/9

= (215/90) : [(35 + 8)/10] + 22/9

= 215/90·10/43 + 22/9

= 5/9 + 22/9

= 27/9

= 3

Answer 2

Salut,

a)0,6×1 1/9 -7/9:(2-1/4)=2/9

=6/10×10/9-7/9:[(8-1)/4]=2/9

=6/9-7/9×4/7=2/9

=6/9-4/9=2/9

=2/9

b)(3 8/9-1,5):(3 1/2+0,8)+2,(4)=3

=(35/9-15/10):(7/2+8/10)+22/9=3

=[(350-13)/90]:(7/2+4/5)+22/9=3

=(215/90):[(35+8)/10]+22/9=3

=215/90×10/43+22/9=3

=5/9+22/9=3

=279=3

=3

Succes la scoala!

BY 7646