25700+х =37536 ,20*17+х =56782 ,14:2+х =134 ,х +13+12=54
25700 + x = 37536 x = 37536 - 25700 x = 11836 25700 + 11836 = 37536 37536 = 37536 20 × 17 + x = 56782 340 + x = 56782 x = 56782 - 340 x = 56442 20 × 17 + 56442 = 56782 56782 = 56782 14 ÷ 2 + x = 134 7 + x = 134 x = 134 - 7 x = 127 14 ÷ 2 + 127 = 134 134 = 134 x + 13 + 12 = 54 x + 25 = 54 x = 54 - 25 x = 29 29 + 13 + 12 = 54 54 = 54
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