12+3(x-1)=0 get HDTV eh eh to the Taj Ryu the решите короче
12+3(х-1)=0 12+3х-3=0 3х+9=0 3х=-9 х=-9÷3 х=-3
12+3(х-1)=0 12+3х-3=0 3х+9=0 3х=-9 х=-3