Posted by Lost on Monday, December 6, 2010 at 12:35pm.
72x+48=42x-12 First, subtract 42x from both sides. 72x - 42x + 48 = 42x - 42x - 12 30x + 48 = -12 Then subtract 48 from both sides. 30x = -48 + (-12) 30x = -60 x = -60/30 x = -2