Răspuns :
5ori ?=3ori ? - 5x3=3x5, 5x6=3x10, 5x9=3x15
5ori ?=7ori ? - 5x7=7x5,
?ori5= 11ori ? - 11x5=5x11,
?ori 5=2ori ? - 2x5=5x2, 4x5=2x10, 6x5=2x15
?ori 5= 6ori ? - 6x5=6x5,
5ori ?= ?ori 5 - 5x5=5x5, 5x10=10x5, 5x9=9x5
sper ca e bine
5ori ?=3ori ? - 5x3=3x5, 5x6=3x10, 5x9=3x15
5ori ?=7ori ? - 5x7=7x5,
?ori5= 11ori ? - 11x5=5x11,
?ori 5=2ori ? - 2x5=5x2, 4x5=2x10, 6x5=2x15
?ori 5= 6ori ? - 6x5=6x5,
5ori ?= ?ori 5 - 5x5=5x5, 5x10=10x5, 5x9=9x5
sper ca e bine