Question

икс+273-54=648+254

432+(808x иск)=4096:2

(989-154)-икс=142x3

Answer 1

1) Х + 273-54 = 648+254
    Х = (648+254)-(273-54)
    Х = 902 - 219
    Х = 683

2) 432+ (808*Х) = 4096:2
     808*Х = (4096:2)-432
     808*Х = 1616
     Х =1616:808
     Х = 2

3) (989-154)-Х=142*3
     Х = (989-164)-(142*3)
     Х = 825 - 426
     Х = 399