7(2х-3) – х = 3х - 11 2) 2(3х-2) = 42 + (3-х) 3) (2х-20)(х+6)(х-16)=0 4) (3х-1)² - 9х² ... 3х- 2у = 16 4х+у = 3 10. х+3у = 7 2у+х = 5 ... (2х- 3у):(
7(2х-3) – х = 3х - 11 2) 2(3х-2) = 42 + (3-х) 3) (2х-20)(х+6)(х-16)=0 4) (3х-1)² - 9х² ... 3х- 2у = 16 4х+у = 3 10. х+3у = 7 2у+х = 5 ... (2х- 3у):(