Question

Ex 1,2,3,4 VĂ ROGGGGG!DAU COROANA!

Answer 1

1. $\frac{3}{8}$+$\frac{2}{8}$=$\frac{3+2}{8}$=$\frac{5}{8}$/×8(pentru a disparea numitorul, adica 8)
5=5=5 ADEVARAT
2. $\frac{2}{15}$+$\frac{3}{15}$+$\frac{7}{15}$=$\frac{2+3+7}{15}$=$\frac{12}{15}$/×15
12=12=12 ADEVARAT
3. $\frac{1}{11}$+$\frac{3}{11}$$\frac{5}{11}$+$\frac{2}{11}$=$\frac{1+3+5+2}{11}$=$\frac{11}{11}$=1/×11
11=11=11=11(DEOARECE AM INMULTIT 1 CU 11) ADEVARAT
4. $\frac{5}{a}$+$\frac{6}{a}$+$\frac{7}{a}$=$\frac{5+6+7}{a}$=$\frac{18}{a}$/×a
18=18=18 ADEVARAT
Sper ca asta trebuiua sa fac si sper ca te am ajutat! :)