2 4х 5 )= 7х 1 July 8, 2019 16 32 64 128 7х 2 5 4х )=- 13 3х 1 2 4х 3 5 7х 1 10 6 7 2х-5 4 2 5/7+х=4 1/2 2 7х-1=5 4-1
