Помогите пожалуйста,856 номер

1) 16x -170 +14x - 330 = 85x + 1400 - 56x + 58 30x - 29x = 500 + 1458 x = 1958 2) 1350 + 5y + 500 = 15y - 150 - 589 15y - 5y = 1850 + 739 10y = 2589 y = 258,9 3) 9z - 657 - 8z - 3000 = 238 - 11z + 77 z + 11z = 315 + 3657 12z = 3972 z = 331 4) 17x + 221 - 19x + 399 +249 = 125x - 1325 -21x -1728 104x + 2x = 3053 + 869 106x = 3922 x = 37 5) 8y - 2600 -17y - 15980 = 6576 - 6y - 94y + 1598 100y - 9y = 8174 + 18580 91y = 26754 y = 294 6) 85z - 27 -19 - 19z = 43 - 43z + 91 + 91z 66z - 48z = 134 + 46 18z = 180 z = 10