multiply the -5x into the parentheses [tex] - 5x(3x + 3) = - 15x - 15[/tex] drop down the remaining numbers [tex] - 130 = - 15x - 15 + 5[/tex] add the similar terms [tex] - 15 + 5 = - 10[/tex] [tex] - 130 = - 15x - 10[/tex] cancel out the -10 by adding it with itself and the -130 [tex] - 120 = - 15x[/tex] divide both sides by 15 [tex] \frac{ - 120}{ - 15 } = \frac{ - 15}{ - 15} [/tex] remember that if dividing by 2 negatives, you will get a positive. [tex]x = 8[/tex]
