8 * ( 21040 - 9450) : 2 =? X * 3 + 435 = 1350 X - 1020 = 1520: 4

8 * (21040 - 9450) : 2 = 46360 1) 21040 - 9450 = 11590 2) 11590 * 8 = 92720 3) 92720 : 2 =46360 х * 3 + 435 = 1350 х * 3 = 1350 - 435 х * 3 = 915 х = 915 : 3 х = 305 Проверка: 305 * 3 + 435 = 1350 915 + 435 = 1350 1350 = 1350 х - 1020 = 1520 : 4 х - 1020 = 380 х = 1020 + 380 х = 1400 Проверка: 1400 - 1020 = 1520 : 4 380 = 380