Question

5 supra 7 : x = 10
x : 1 supra 15 = 3 supra 11
17 intregi si 1 supra 2 ; x = 3 intregi si 1 supra 2

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Va rog ajutatima

Answer 1

5/7:x=10
5/7*1/x=10
5/7x=10
x=5/70
x=1/14
x:1/15=3/11
x*15/1=3/11
15x=3/11
x=3/165=1/55
35/2:x=7/2
35/2*1/x=7/2
35/2x=7/2
x=70/14
x=5