hala718 Educator since 2008 3,656 answers | Certified Educator Share Link Share Page Citation Cite 7x-(2x-12)=-8 7x -2x +12 = -8 5x +12 = -8 5x +12 -12 = -8-12 5x = -20 5x/5 = -20/5 x = -4 Approved by eNotes Editorial Team