Question

ex 8
Aflati x € N, astfel încât sa se obtine propozitii adevarate : a)x/8= 1/4
b) 5/x=30 /36
c)4/12=x/6
d)18/6=3/x
e)24/6=4/x

Answer 1

x / 8 = 1 / 4 => x = 8 / 4 = 2

5 / x = 30 / 36 => x = ( 36 × 5 ) / 30 =36 / 6 = 6

4 / 12 = x / 6 => 1 / 3 = x / 6 => x = 6 / 3 = 2

18 / 6 = 3 / x => 3 / 1 = 3 / x => x = 1

24 / 6 = 4 / x => 4 / 1 = 4 / x => x = 1