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Efectuati prin adunare repetata: 4×3 2×9. 5×2. 6×4. 7+10

Răspuns :

SBya
4+4+4=12
2+2+2+2+2+2+2+2+2=18
5+5=10
6+6+6+6=24
7+10=17
4×3=3+3+3+3,2×9=9+9,5×2=5+5,6×4=6+6+6+6,7+10=17