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3(17+36:a)=63 unde a este nr natural

Răspuns :

3x17+3x36:3a=63
51+93:3a=63
51+31a=63
31a=63-51
31a=12
a=12/31
3 *17 +36*3 /3a = 63
51+108+3a=63
159+3a=63
3a=159-63
3a=96
a =96/3
a=32