Ответ:179х - 159х + 600 = 2020179х-159х=20х20х+600=202020х=2020-60020х=1420х=1420:20х=71
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Ответ:
179х - 159х + 600 = 2020
179х-159х=20х
20х+600=2020
20х=2020-600
20х=1420
х=1420:20
х=71