jawabkan dong besok d kumpul!

2 x - y = 7 ... (x3) 6 x - 3y = 21
x + 3y = 7
y-41 = M1 (x-x1)
y-1 = 5 (x-4)
y = 5 x -19
5x-y=19
maaf klo salah semoga membantu