Question

Ce semne folosesc pentru a obtine(+,-,×,÷,(,) 3□3□3□3=12(inafara de adunare la ac ex) 4□4□4□4=15 2□9□8□3=6 8□2□6□20=

Answer 1

(3÷3+3)x3=12
(4x4)-(4+4)=15
(2×9)-(8x3)=6