25700+х =37536 ,20*17+х =56782 ,14:2+х =134 ,х +13+12=54

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25700 + x = 37536x = 37536 - 25700x = 1183625700 + 11836 = 37536 37536 = 3753620 × 17 + x = 56782340 + x = 56782x = 56782 - 340 x = 5644220 × 17 + 56442 = 56782 56782 = 5678214 ÷ 2 + x = 1347 + x = 134x = 134 - 7x = 12714 ÷ 2 + 127 = 134134 = 134x + 13 + 12 = 54x + 25 = 54x = 54 - 25x = 2929 + 13 + 12 = 5454 = 54