1)2(11×-5)-17×=55 2)5(8×+3)-12=83 3) 7(2×+9)+3×=114 - вопрос №65192421211517552583128337293114434132574 от новичок535 07.12.2020 21:39

Question

Математика: 1)2(11×-5)-17×=55 2)5(8×+3)-12=83 3) 7(2×+9)+3×=114 4) 3(4×+13)-25=74

новичок535 · Answer

1) 22х - 10 - 17х = 55 22 -17х = 55 + 10 5х = 65 х = 65:5 х = 13 2) 40х + 15 -12 = 83 40х = 83 - 15 + 12 40х = 80 х = 80:40 х = 2 3) 14х + 63 + 3х = 114 14х + 3х = 114 - 63 17х = 51 х = 51:17 х = 3 4) 12х + 39 -25 = 74 12х = 74 - 39 + 25 12х = 60 х = 60:12 х = 5...