+0  
 
+2
301
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avatar+426 

\(\frac{2}{3}s + \frac{1}{3}=\frac{3}{4}s-\frac{1}{4}\)I totally forget how to add and subtract fractions

DerpofTheAbyss  Sep 6, 2017
 #1
avatar+90023 
+2

 

2/3 (s) + 1/3  =  3/4(s) - 1/4      

 

multiply through by the common denominator of 3,4  = 12

 

8s  + 4  =  9s  - 3         add 3 to both sides, subtract 8s from both sides

 

7  =  s

 

 

cool cool cool

CPhill  Sep 6, 2017
edited by CPhill  Sep 6, 2017
 #2
avatar+426 
+3

Thanks.

DerpofTheAbyss  Sep 11, 2017

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