Tolong jawab dong yang pintar tentang Aljabar Nomor 1 Sama 7 Pliss Besok Dikumpul

1. A = 4x + y dan B = 2x - 5y

a) A+B = 4x+y+2x-5y = 6x-4y
b) A-B = 4x+y-(2x-5y) =4x+y-2x+5y = 2x+6y
c) A+4B = 4x+y+4(2x-5y) = 4x+y+8x-20y = 12x-19y
d) 3A-2B = 3(4x+y)-2(2x-5y) = 12x+3y-4x+10y = 8x+13y