Question

ex. 3 va rog...pana maine!Dau coroana!

Answer 1

[tex]\frac{31}{17}=\frac{62}{x-2} \\ \\ 31\left(x-2\right)=17\cdot \:62 \\ \\ 31\left(x-2\right)=1054 \\ \\ \frac{31\left(x-2\right)}{31}=\frac{1054}{31} \\ \\ x-2=34 \\ \\ x-2+2=34+2 \\ \\ x=36[/tex]

Answer 2

31/17 = 62/(x-2)    aplicam proprietatea fundamentala a proportiilor
31(x-2) = 17×62
31x-62 = 1054
31x = 1054 + 62
31x = 1116
x = 1116/31
x=36

31/17=62/34