(16x - 170) + 2(7x - 165) = 85x + 1400 - (56x - 58)
16x - 170 + 14x - 330 = 85x + 1400 - 56x + 58
30x - 85x + 56x = 500 + 1400 + 58
x = 1958
16*1958 - 170 + 2(7*1958 - 165) = 85*1958 + 1400 - (56*1958 - 58)
31328 - 170 + 2(13706 - 165) = 166430 + 1400 - (109648 - 58)
31158 + 27082 = 167830 - 109590
58240 = 58240
Ответ: {1958}
1дм 6см=16см
16см•2=32(см)-длина
206/13=15 11/13
n = 15
324/16 = 20 4/16
n=20
2 + 2 = 4 4 - 2 = 2
7 + 7 = 14 14 -7 = 7
7+8+9+1.030+40×10×7=73.780
7+8+9=24
1.030+24=1.054
1.054×10=10.540
10.540×7=73.780 Вроде так :)