(16x-170)+2(7x-165)=85x+1400-(56x-58)

(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}

16х-170+14х-330=85х+1400-56х+58
16х+14х-85х+56х=170+330+1400+58
х=1958