Question 53729
You need to first expand the equation on the right side to get {{{7+3x=x-8-4x}}} and then combine like terms to get {{{7+3x=-8-3x}}}.  Now add 3x to both sides and we get {{{7+6x=-8}}} and then subtract 7 from both sides to get {{{6x=-15}}}.  Finally, divide both sides by 6 to get {{{x=-15/6}}}, which reduces to {{{x=-5/2}}}.