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1/2 x = 9 - 3
1/2 x = 6
x = 6.2/1
x = 12
2) 3/4 y - 1/5 y = 2
15/20 y - 4/20 y = 2
11/20 y = 2
y = 2.20/11
KALO ADA YG SALAH MAAF
2) 3/4y-1/5y = 2
*3/4 - 1/5 = 15-4/20 = 11/20
jadi 11/20 y = 2 | y = 2 X 20/11 | y = 40/11 | y = 3 7/11
maaf kalau salah:)