(34+(19-икс)+15)=68 плиз помогите!!!!
34 + ( 19 - х ) = 68 - 15 34 + ( 19 - х ) = 53 19 - х = 53 - 34 19 - х = 19 х = 19 - 19 х = 0 _____________ (34 + (19 - 0) + 15) = 68 68 = 68