А) 3(4х-5)+2(8-3х) = б) 9-(2х+7) +(5х-3)= в) 4х+6у-9-10х +8-3у

Question

А) 3(4х-5)+2(8-3х) =
б) 9-(2х+7) +(5х-3)=
в) 4х+6у-9-10х +8-3у

Answer 1

А) 3(4х-5)+2(8-3х) = 12х - 15 +16 - 6х = 6х +1
б) 9-(2х+7) +(5х-3)= 9 - 2х - 7 + 5х -3 = 3х -1
в) 4х+6у-9-10х +8-3у =3у -6х -1