ДАМ 20 БАЛЛОВ
УПРОСТИТЕ ВЫРАЖЕНИЕ. НАЙДИТЕ КОФИЦИЕНТ:
1) -2а×(-7)×(-5в)
2) -5а×(-9)×(-4в)
3) -15с×4×(-3d)
4) 7m×(-8)×5n
5) 5m×(-6)×(-20n)
6) 125m×7×(-8n)

CРОЧНО!!!!!!!!
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