Răspuns :
7 × 8 = 56
56 + 19 = 75
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4 × 9 = 36
36 + 19 = 55
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6 × 4 = 24
24 + 19 = 43
56 + 19 = 75
______________________________
4 × 9 = 36
36 + 19 = 55
______________________________
6 × 4 = 24
24 + 19 = 43