N1+N2+N4=64
N4+N5=42
N3+N2=61
N1+N2+N3+N4+N5=132
N4=15
N5=42-15=27
N1+N2+N3=132-27-15=90
N1=90-61=29
N2=64-29-15=20
Ответ: 20
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N1+N2+N4=64
N4+N5=42
N3+N2=61
N1+N2+N3+N4+N5=132
N4=15
N5=42-15=27
N1+N2+N3=132-27-15=90
N1=90-61=29
N2=64-29-15=20
Ответ: 20