Răspunsuri

2014-11-16T11:32:58+02:00
X+14+x+23+x+87=214, 3x+124=214, 3x=214-124, 3x=90, x=90/3, x=30
verificare 30+14=44, 30+23=53, 30+87=117, 44+53+117=214
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