tolong nomor 19 dong kak

x/3 + x-3/4 = 1/2
12(x/3) + 12(x-3/4) = 12(1/2)
4x + 3x - 9 = 6
7x - 9 = 6
7x - 9 + 9 = 6 + 9
7x = 15
7x/7 = 15/7
x = 2 1/7

maaf kalau salah