математика номер 782

1. Х=2/3Х-13Х=2Х-33Х-2Х=-3Х=-32. Х=1/2=3/4-ХХ×Х=3/4+1/22Х=5/4Х=5/83. Х-2/3=5/6Х6Х-4=5Х6Х-5Х=4Х=4 4 4. 1 ---Y=Y+4 54/5Y=Y+44Y=5Y=204Y-5Y=20-Y=20Y=-205. 2/3Y-1/3=5/9Y6Y-3=5Y6Y-5Y=3Y=36. 3/4Y-2/3=7/12Y9Y-8=7Y9Y-7Y=82Y=8Y=4