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November 21st, 2014, 10:34 AM  #1 
Newbie Joined: Nov 2014 From: Cottingham Posts: 8 Thanks: 0 Math Focus: Surds!  Fractions! With powers! Or equations with powers and a number
I have knowledge of solving fractions without powers, e.g. (2x+2)/3+x/5=10. But for (2x(x+1))/2=20, I got to 2x^2+2x=40, what do I do next? 
November 21st, 2014, 11:51 AM  #2 
Senior Member Joined: Oct 2014 From: EU Posts: 224 Thanks: 26 Math Focus: Calculus  
November 21st, 2014, 12:24 PM  #3 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,879 Thanks: 1087 Math Focus: Elementary mathematics and beyond 
$\displaystyle x^2+x20=(x+5)(x4)$

November 21st, 2014, 03:47 PM  #4 
Senior Member Joined: Apr 2014 From: Europa Posts: 571 Thanks: 176  $\displaystyle \color{blue}{\dfrac{\not{2}x(x+1)}{\not{2}}=20\ \Longleftrightarrow\ x(x+1)=20 \\\;\\ \\\;\\ x\ \ and\ \ x+1\ \ can\ be,\ here,\ two\ consecutive\ integers. \\\;\\ 4\cdot5 = 20 \\\;\\ (5)\cdot(4)=20}$ 

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algebra, equations, find, fractions, number, powers 
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