Răspuns :
A/B=4=>A=4B
A/C=5/2<=>A=5C/2
4B=5C/2 |•2<=>8B=5C |:C<=>8B/C=5=>B/C=5/8
A/B+B/A= CD/BA - 2•2= 4
C = 5/2=2•5= 10
Explicație pas cu pas:
A/B=4=>A=4B
A/C=5/2<=>A=5C/2
4B=5C/2 |•2<=>8B=5C |:C<=>8B/C=5=>B/C=5/8
A/B+B/A= CD/BA - 2•2= 4
C = 5/2=2•5= 10
Explicație pas cu pas: