Ответ 43y-14y+39y-18=(43-14+39)y-18=68y-18=68*12-18=798
43у - 14у + 39у - 18 = 68у -18= 68 •12 - 18 =816 - 12= 798
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Ответ 43y-14y+39y-18=(43-14+39)y-18=68y-18=68*12-18=798
43у - 14у + 39у - 18 = 68у -18= 68 •12 - 18 =816 - 12= 798