当x=( )时,2(x+3)的值与3(1-x)的值互为相反数.

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当x=()时,2(x+3)的值与3(1-x)的值互为相反数.当x=()时,2(x+3)的值与3(1-x)的值互为相反数.当x=()时,2(x+3)的值与3(1-x)的值互为相反数.9

当x=( )时,2(x+3)的值与3(1-x)的值互为相反数.
当x=( )时,2(x+3)的值与3(1-x)的值互为相反数.