Question

va rog ajutati-ma !!!!!!!

Answer 1

Sper ca te.am ajutat

Answer 2

g) $\frac{5}{18} + \frac{14}{9} : \frac{7}{3} + \frac{1}{2} :9=$

$=\frac{5}{18} + \frac{14}{9} * \frac{3}{7} + \frac{1}{2}*\frac{1}{9}=$

$=\frac{5}{18} + \frac{2}{3}  + \frac{1}{18}=$

$=\frac{5}{18} + \frac{12}{18}  + \frac{1}{18}=$

$=\frac{5+12+1}{18} =$

$=\frac{18}{18} =$

=1

h)$\frac{x}{x+1} + \frac{x}{x^{2} +x}=$

$= \frac{x}{x+1} + \frac{x}{x(x+1)}=$

$= \frac{x}{x+1} + \frac{1}{x+1}=$

$= \frac{x+1}{x+1} =$

=1

i) $\frac{1}{2a+1} * \frac{4a+2}{3} =$

$= \frac{1}{2a+1} * \frac{2(2a+1)}{3} =$

$= \frac{2}{3}$