x 2x - 4
___ - _______ = 5
3 2 x 2x - 4
___ - _______ = 5
3 2 @Mathematics

Question

x            2x - 4
___  -      _______   = 5                
 3                   2                              x            2x - 4
___  -      _______   = 5                
 3                   2                             @Mathematics

anonymous · Answer

The cost of Hisako's school supplies was $49.80. She had a coupon for 30% off 
the entire purchase. What was the final price?

anonymous · Answer

Get everything over a common denomiator then multiply through by it.
2x-6x+12 = 30
Re-arrange and solve for x

anonymous · Answer

multiply thru by 6
2x - 3(2x-4) = 30
-4x = 18
x = -4.5