2х 3 2 х 1 )= 4 х 1 )- 7 July 8, 2019 16 32 64 128 3 (- 2х 1 )- 2 х 13 )= 7х 4 1 х 3 2х 1 )- 4 х 1 )= 2х 7 2-3х=2(1-у) 4(х+у)=х-1 5 2(4х + 1) – х = 7х + 3 2 - 4(х - 1) = 2(х + 3)
