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B) x + y + y = x + 2y
C) 2x + y + x = 3x + y
D) a + b + 2b = a + 3b
E) 2a + b - a = a + b
F) 3x + 2y - y = 3x + y
G) 3x + y - x = 2x + y
H) 5a - 2b - 2a = 3a - 2b