Answer:
16
Explanation:
(4 + x) / 2 = 10
(x + 4) / 2 = 10
x + 4 = 2 x 10
x + 4 = 20
(x + 4) + (-4) = 20 + (-4)
x = 16
4 + n
-------- = 10
2
2*2 2*10 on both sides
4+n=20
subtract 4 on both sides.
n=16
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