SOLUTION: Hello, I am having a question on 1 problem for my online Algebra class that just are not clicking in my head. I have tried to do them several times. I would really appreciate if

Algebra ->  Real-numbers -> SOLUTION: Hello, I am having a question on 1 problem for my online Algebra class that just are not clicking in my head. I have tried to do them several times. I would really appreciate if      Log On


   

Question 274513: Hello,
I am having a question on 1 problem for my online Algebra class that just are not clicking in my head. I have tried to do them several times. I would really appreciate if you could help with these two :)
Thank You
it read a-2/5 + a-3/4 = 6/5





Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
I'm assuming that the problem is a-2%2F5%2Ba-3%2F4=6%2F5


a-2%2F5%2Ba-3%2F4=6%2F5 Start with the given equation.


20%28a-2%2Fcross%285%29%2Ba-3%2Fcross%284%29%29=20%286%2Fcross%285%29%29 Multiply both sides by the LCD 20 to clear any fractions.


20a-8%2B20a-15=24 Distribute and multiply.


40a-23=24 Combine like terms on the left side.


40a=24%2B23 Add 23 to both sides.


40a=47 Combine like terms on the right side.


a=%2847%29%2F%2840%29 Divide both sides by 40 to isolate a.


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Answer:

So the solution is a=47%2F40 which approximates to a=1.175.