a)
3x + 5x + 96 = 1568 = 8x + 96. 8x = 1568 - 96 = 1472. x = 1472 : 8 = 184
Ответ: 184.
в)
88 880 : 110 + x = 808 + x = 809. x = 809 - 808 = 1
Ответ: x = 1;
д)
256m - 147m - 1871 = 63 747 = 109m - 1871. 109m = 63 747 + 1871 = 65 618. x = 65 618 : 109 = 602.