ребята помогите, надо вычислить, даю 15-20 баллов

1) 7 x 65 + 7 x 35 + 3 x 35 + 3 x 55

2) 8 x 3 + 3 x 93 + 8 x 97 + 3 x 7

3) 37 x 49 + 37 x 51 + 63 x 49 + 51 x 63
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