3х 7 5 2х 4 July 8, 2019 16 32 64 128 3х 7 4 2х 3 )- 5 15х 4 3х 5 )= 7 2х 5 4 3х 7 )- 6 2х 5 )= 5х 1 6 3х 4 )- 7 2х 5 )= 2х 1 3 7х-5-4х 3х-5 7 3х – 7(3х – 4) = 5(2х – 7)
