SOLUTION: X/4+X/5=9

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Question 168853This question is from textbook
: X/4+X/5=9
 This question is from textbook

Found 2 solutions by Mathtut, jim_thompson5910:
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
x%2F4%2Bx%2F5=9 multiply all terms by 20
5x%2B4x=180
9x=180....divide by 9
:
highlight%28x=20%29

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
x%2F4%2Bx%2F5=9 Start with the given equation.


20%28x%2Fcross%284%29%2Bx%2Fcross%285%29%29=20%289%29 Multiply both sides by the LCD 20 to clear any fractions.


5x%2B4x=180 Distribute and multiply.


9x=180 Combine like terms on the left side.


x=%28180%29%2F%289%29 Divide both sides by 9 to isolate x.


x=20 Reduce.


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Answer:

So the answer is x=20