menggunakan metode substitusi, besok kumpull
y = 4x + 1
4x = y - 1
x = (y-1)/4
y = 7x - 2
y = 7((y-1)/4) - 2
y = {(7y-7)/4} -2
4y = 7y-7-8
15 = 3y
y = 5
[answer.2.content]100 Things Jets Fans Should Know & Do Before They Die (100 Things...Fans Should Know)
100 Things Jets Fans Should Know & Do Before They Die (100 Things...Fans Should Know)
y = 4x + 1
4x = y - 1
x = (y-1)/4
y = 7x - 2
y = 7((y-1)/4) - 2
y = {(7y-7)/4} -2
4y = 7y-7-8
15 = 3y
y = 5
[answer.2.content]