Question

1) -4х-8(9-2х) 2) 1/3(12-2,1у)+0,3 у 3) 6(3х-2)+4(5х-1)

Answer 1

1) -4х-8(9-2х) =-4x-72+16x=12x-72

2) 1/3(12-2,1у)+0,3у =4-0,7y+0,3y=4-0,4y

3) 6(3х-2)+4(5х-1)=18x-12+20x-4=38x-16