1. 3/5 + 1/5 = 4/5
7. 7/9 - 2/12 = 9×4 = 36
12×3=36
= 7×4 =28
=2×3 =6
jadi 28/36 + 6/36 = 34
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1. 3/5 + 1/5 = 4/5
7. 7/9 - 2/12 = 9×4 = 36
12×3=36
= 7×4 =28
=2×3 =6
jadi 28/36 + 6/36 = 34