Expression 1: negative 12 less than 2 "x" plus left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "z" less than 12 left brace, negative 12 less than left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "x" plus 2 "y" less than 12 , right brace left brace, negative 12 less than left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "y" plus 2 "z" less than 12 , right brace left brace, negative 12 less than 2 "x" minus left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "z" less than 12 , right brace left brace, negative 12 less than left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "x" minus 2 "y" less than 12 , right brace left brace, negative 12 less than left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "y" minus 2 "z" less than 12 , right brace left brace, negative 12 less than left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "x" plus left parenthesis, 1 minus StartRoot, 5 , EndRoot , right parenthesis "z" less than 12 , right brace left brace, negative 12 less than left parenthesis, 1 minus StartRoot, 5 , EndRoot , right parenthesis "x" plus left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "y" less than 12 , right brace left brace, negative 12 less than left parenthesis, 1 minus StartRoot, 5 , EndRoot , right parenthesis "y" plus left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "z" less than 12 , right brace left brace, negative 12 less than left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "x" minus left parenthesis, 1 minus StartRoot, 5 , EndRoot , right parenthesis "z" less than 12 , right brace left brace, negative 12 less than left parenthesis, 1 minus StartRoot, 5 , EndRoot , right parenthesis "x" minus left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "y" less than 12 , right brace left brace, negative 12 less than left parenthesis, 1 minus StartRoot, 5 , EndRoot , right parenthesis "y" minus left parenthesis, 1 plus StartRoot, 5 , EndRoot , right parenthesis "z" less than 12 , right brace left brace, negative 6 less than "x" plus "y" plus "z" less than 6 , right brace left brace, negative 6 less than "x" plus "y" minus "z" less than 6 , right brace left brace, negative 6 less than "x" minus "y" plus "z" less than 6 , right brace left brace, negative 6 less than "x" minus "y" minus "z" less than 6 , right brace Has graph.−12<2x+1+5z<12−12<1+5x+2y<12−12<1+5y+2z<12−12<2x−1+5z<12−12<1+5x−2y<12−12<1+5y−2z<12−12<1+5x+1−5z<12−12<1−5x+1+5y<12−12<1−5y+1+5z<12−12<1+5x−1−5z<12−12<1−5x−1+5y<12−12<1−5y−1+5z<12−6<x+y+z<6−6<x+y−z<6−6<x−y+z<6−6<x−y−z<6