1/2=?/4
Metoda 1
1×4=2×?
4=2×?
?=4:2
?=2
Metoda 2
Amplificam pe 1/2 cu 2
2/4=?/4
=> ?=2
1 4/5=?/5
1×5+4 /5=?/5
9/5=?/5
?=9
8/8=?/4
1=?/4
=>?=4
(Pentru ca 4/4=1 )
3 2/3=?/3
3×3+2 /3=?/3
11/3=?/3
?=11
16/2=?/4
8=?/4
Amplificam pe 8 cu 4
32/4=?/4
?=32
?=16×4:2
14/7=?/10
2=?/10
Amplificam pe 2 cu 10
20/10=?/10
?=20
?=14×10:7
