27 a +36 + 9 -4 = 27 - 12 + a =?
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A computer hacker is a computer expert who uses their technical knowledge to achieve a goal or overcome an obstacle, within a computerized system by non-standard means.
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27a+36+9-4=27-12+a
27a+41=15+a
27a-a=15-41
26a=26
a=26/26
a=1
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