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2014-11-11T19:54:31+02:00
17(2x+3)-25=366
34x+51-25=366
34x+26=366
34x=366-26
34x=340
x=340/34=10
14 4 14
2014-11-11T19:54:46+02:00
17(2x+3)=391
2x+3=391:17
2x+3=23
2x=20
x=20:2
=>x=10
3 5 3