3(x+2) + 4(x+5)/(x+7)=5
asked Nov 30, 2016 in Algebra 1 Answers by anonymous

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1 Answer

The question is ambiguous; it could be:


Let's try to solve this.

First we multiply through by x+7:


Now expand all the brackets:


Gather like terms together:


This does not factorise. The roots are irrational but can be found using the quadratic formula.

Let's try another interpretation:


Expand the brackets:



Multiply through by (x+7):

7x+26=5x+35 so 2x=9 and x=9/2=4½ or 4.5.

answered Nov 30, 2016 by Rod Top Rated User (478,540 points)
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