1. Nilai (x-y) yang memenuhi SPLTV x+y+2z= 2 3y-4z= -5 6z= 3 A.-3 B.-2 C.-1 D.1 E.3 Tolong jawab yaa!!!

mencari z
6z = 3
z = 3/6 = 1/2

mencari y
3y - 4z = -5
3y - 4(1/2) = -5
3y - 2 = -5
3y = -5 +2
3y = -3
y = -1

mencari x
x+y+2z =2
x + (-1) + 2(1/2) = 2
x - 1 + 1 = 2
x = 2

nilai x - y adalah
2-(-1) = 2+1 = 3 (e)