Răspuns :
patrat= 3 x stea
3 stea + 3 stea: stea=12
3 stea + 3 = 12
3 stea =9 = patrat
stea= 9:3 = 3
5x9=45
9x3=27
9:3=3 (adevarat)
9+9:3=12 (adevarat)
3 stea + 3 stea: stea=12
3 stea + 3 = 12
3 stea =9 = patrat
stea= 9:3 = 3
5x9=45
9x3=27
9:3=3 (adevarat)
9+9:3=12 (adevarat)