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June 2nd, 2014, 12:27 PM  #1 
Newbie Joined: Jun 2014 From: UK Posts: 14 Thanks: 0  simplifying with fractions
Hi Another very basic problem... How do you treat the x when multiplying it by a fraction? (in order to remove the brackets?) y4 = 1/2(x+2) Thanks in advance. Mark Last edited by skipjack; June 4th, 2014 at 03:11 AM. 
June 2nd, 2014, 01:02 PM  #2 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,807 Thanks: 1045 Math Focus: Elementary mathematics and beyond 
Multiplying both sides by 2 gives 2y  8 = x + 2.

June 2nd, 2014, 03:19 PM  #3 
Senior Member Joined: Jul 2013 From: United Kingdom Posts: 468 Thanks: 40  $\displaystyle y4=\frac { \left( x+2 \right) }{ 2 } \\ \\ 2\cdot y2\cdot 4=\frac { \left( x+2 \right) }{ 2 } \cdot 2\\ \\ 2y8=x+2\\ \\ x=2y82\\ \\ x=2y10=2\left( y5 \right)$ Last edited by perfect_world; June 2nd, 2014 at 03:24 PM. 
June 3rd, 2014, 12:22 AM  #4 
Global Moderator Joined: Dec 2006 Posts: 18,961 Thanks: 1606  
June 3rd, 2014, 12:36 AM  #5 
Newbie Joined: Jun 2014 From: UK Posts: 14 Thanks: 0 
Thanks everyone! Mark 
June 3rd, 2014, 01:07 PM  #6 
Newbie Joined: Jun 2014 From: UK Posts: 14 Thanks: 0 
mmm...now what if it's a negative fraction: y – 4 = 1/2 (x+2) 
June 3rd, 2014, 01:22 PM  #7 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 12,418 Thanks: 830  

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