Ответ:
KN-x
MK-3x
MN=20
3x+x=20
4x=20
x=5 (KN)
3×5=15см(MN)
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Ответ:
KN-x
MK-3x
MN=20
3x+x=20
4x=20
x=5 (KN)
3×5=15см(MN)