Ответы на вопрос:
1) 7(2х+9)+3х=114 14х + 63 + 3х = 114, 17х = 114 - 63, 17х = 51 х= 51: 17 х=3 2)3(4х+13)-25=74 12х + 39 - 25 = 74 12х = 74 -39+25 12х = 60 х=60: 12 х=5
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