SOLUTION: Solve the equation: x/4 -1= x/5 I dont understand at all how to do it.

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Question 92354: Solve the equation:
x/4 -1= x/5
I dont understand at all how to do it.

Answer by dolly(163) About Me  (Show Source):
You can put this solution on YOUR website!
x/4 -1= x/5
The LCD of the denominators = 20
Multiplying by the LCD, throughout,
20(x/4) - 20(1) = 20(x/5)
==> 5x - 20 = 4x
==> 5x - 4x = 20
==> x = 20