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3 1/2 x 5/6= explian with numbers

 Jan 16, 2015

Best Answer 

 #2
avatar+808 
+5

3 1/2 * 5/6      

 

Transfom the mixed numbers into improper fraction, using this formula (can you see why it's correct?)

 

$$a\frac{b}{c}=\frac{ac + b}{c}$$       We get:

 

$$3\frac{1}{2}=\frac{3*2+1}{2}= \frac{7}{2}$$    Thus the whole expression is:

 

$$\frac{7}{2}*\frac{5}{6}$$      Multiply numerator (top) by numerator, and denominator (bottom) by denominator:

 

$$\frac{7}{2}*\frac{5}{6}= \frac{7*5}{2*6}=\frac{35}{12}$$  

 Jan 16, 2015
 #1
avatar+129852 
+5

3 1/2 x 5/6=

Converting the mixed number to an "improper" fraction, we have 3 + 1/2  = 7/2

Now, just multiply 7/2 x 5/6 = 35/12 .....in mixed number terms, we have 2 + 11/12

 

  

 Jan 16, 2015
 #2
avatar+808 
+5
Best Answer

3 1/2 * 5/6      

 

Transfom the mixed numbers into improper fraction, using this formula (can you see why it's correct?)

 

$$a\frac{b}{c}=\frac{ac + b}{c}$$       We get:

 

$$3\frac{1}{2}=\frac{3*2+1}{2}= \frac{7}{2}$$    Thus the whole expression is:

 

$$\frac{7}{2}*\frac{5}{6}$$      Multiply numerator (top) by numerator, and denominator (bottom) by denominator:

 

$$\frac{7}{2}*\frac{5}{6}= \frac{7*5}{2*6}=\frac{35}{12}$$  

Tetration Jan 16, 2015

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