Question

cristi urmatoarele nr sub forma de produs utilizând factorul c
omun a 2/35+2/37+2/39=​

Answer 1

$\frac{2}{35} + \frac{2}{37} + \frac{2}{39} = 2( \frac{1}{35} + \frac{1}{37} + \frac{1}{39} ) = 2( \\ \frac{37 \times 39 + 35 \times 39 + 35 \times 37}{35 \times 37 \times 39} )$