Question

Calculați :

$\it \Big(3\dfrac{8}{9}-1,5\Big):\Big(3\dfrac{1}{2}+0,8\Big)+2,(4)$

Mulțumesc !

Answer 1

Răspuns:

3

Explicație pas cu pas:

$(3\frac{8}{9}-1,5):(3\frac{1}{2}+0,8)+2,(4)=\\\\=(\frac{3*9+8}{9}-\frac{15}{10}):(\frac{3*2+1}{2}+\frac{8}{10})+\frac{24-2}{9}\\ \\=(\frac{35}{9}-\frac{3}{2}):(\frac{7}{2}+\frac{4}{5})+\frac{22}{9}\\ \\=\frac{70-27}{18}:\frac{35+8}{10}+\frac{22}{9}\\ \\=\frac{43}{18}*\frac{10}{43}+\frac{22}{9}\\ \\=\frac{5}{9}+\frac{22}{9}\\ \\=\frac{27}{9}\\ \\=3$

Answer 2

Răspuns:

=(35/9-15/10):(7/2+8/10)+24-2/9

s-a simplificat:

=(35/9-3/2) :(7/2+4/5)+22/9

s-a adus la acelasi numitor,fiecare paranteza:

=70-27/18:  35+8/10+ 22/9

=43/18x10/43+22/9

=5/9+22/9

=27/9

=3

Explicație pas cu pas: