а) Х + 80 = 240х3 б) Х : 6 = 300 -170
Х +80 = 720 Х : 6 = 130
Х = 720 - 80 Х = 130х6
Х = 640 Х = 780
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а) Х + 80 = 240х3 б) Х : 6 = 300 -170
Х +80 = 720 Х : 6 = 130
Х = 720 - 80 Х = 130х6
Х = 640 Х = 780