<PRE><B>Question 256602</B>
3(x-4)-4=5x+6.9-3x
3x-12-4=2x+6.9
3x-16=2x+6.9
3x-2x=6.9+16
x=22.9 ans.
Proof:
3(22.9-4)-4=5*22.9+6.9-3*22.9
3*18.9-4=114.5+6.9-68.7
56.7-4=52.7
52.7=52.7</PRE>