4 5 y 5 8 8 7 July 8, 2019 16 32 64 128 4 5 y 5 8 8 7 решение 4 5 y ⋅ 5 8 8 7 (4 5-y) *5 8=8 7 4 5(-8y-7)-3 9(6-9y)
