Jika 3x+y=22,dan 2x=3y,maka nilai dari 5x-4y=......

3x + y = 22
2x = 3y

3x + y = 22
2x - 3y = 0

9x + 3y = 66
2x - 3y = 0

11x = 66
    x = 6

2x - 3y = 0
12 - 3y = 0
3y = 12
y = 4

x = 6 , y = 4
5x - 4y = 5 ( 6 ) - 4 ( 4 ) = 30 - 16 = 14

3x + y = 22 dan 2x=3y || 3x + y = 22 dan 2x - 3y = 0 || 9x + 3y = 66, 2x - 3y = 0 (tambahkan) || 11x = 66, x= 6, y = 4 || Maka 5x-4y = 5(6) - 4(4) = 14