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2 (3x - 5) =32
6x - 10 = 32
6x = 42
x = 7
2.
27 - 2r = -3
-2r = -3-27
-2r = -30
r = 15
r+8 = 15+8 = 23
3.
6a -12 = 12
6a = 12+12
6a = 24
a = 4
maaf kalau salah:)