Răspuns :

Crys157724id

3 × ( 4 + 3 ) = 3 × 7 = 21

3×4 + 3×3 = 12+ 9 = 21

2 × ( 9 - 6 ) = 2 × 3 = 6

2×9 - 2×6 = 18 - 12 = 6

Seby0714id

Răspuns:

3x(4+3)=

modul 1: 3x7=21

modul 2: 3x4+3x3 =21

2x(9-6)=

modul 1: 2x3=6

modul2: 2x9-2x6=6

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