Answer:
12, 2 and 10
Explanation:
(1)
b - 4 = 8 ( add 4 to both sides )
b = 12
(2)
y + 7 = 9 ( subtract 7 from both sides )
y = 2
(3)
16 = n + 6 ( subtract 6 from both sides )
10 = n
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