!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!ПОМОГИТЕ ОЧЕНЬ НАДО!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

26*(21-у)*9=26*9*(21-у)=234*(21-у)=4914-234упри у=144914-234*14=4914-3276=1638----------------------------------------------------------------289÷17+х÷69=17+х÷69при х=96617+966÷69=17+14=31----------------------------------------------------------------(у+63)*50-15при у=7(7+63)*50-15=70*50-15=3500-15=3485----------------------------------------------------------------64-40+88-z=112-zz=38112-38=74-----------------------------------------------------------------87*5-8*y=435-8yy=64435-8*64=435-512=-77