I assume you mean, ( parentheses!!!)
X/2 + 4 = 10
multiply through by 2
2/1(X/2 + 4 = 10)2/1
X + 8 = 20
subtract 8 from each side
X + 8 - 8 = 20 - 8
X = 12
------------------check in original equation
12/2 + 4 = 10
6 + 4 = 10
10 = 10
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Not enough information to solve
x = -8
-13
the answer is-10 = 12 +xx= -10-12x=-22this is the answerx= -22
-3+x=7. x=10