"2x-4=x+5", "x=9" "3x+5=4x-6", "x=11" "4x+8=6x-12", "x=10" "-3x+7=2x-3", "x=2" "12x-5=4x+3", "x=1" "7-5x=2-6x", "x=9" "4x+2=-3-x", "x=-1" "20x+14=12x+6", "x=-1"
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