Question

27 supra 26+2 supra 39+29 supra 13+69 supra 65=?

Answer 1

    
[tex]\displaystyle \\ \frac{27}{26} + \frac{2}{39} + \frac{29}{13} + \frac{69}{65}= \\ \\ (\text{Numitorul comun este: } 2 \times 3 \times 5 \times 13 = 390 ) \\ \\ =\frac{15 \times 27}{390} + \frac{10 \times 2}{390} + \frac{30 \times 29}{390} + \frac{6 \times 69}{390}= \\ \\ =\frac{405}{390} + \frac{20}{390} + \frac{870}{390} + \frac{414}{390}= \\ \\ =\frac{405+20+870+414}{390}= \boxed{\frac{1709}{390}}[/tex]