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1-3rd of the flowering plants will have yellow flowers and 1-4th of the flowering plants will have white flowers. what fraction of the flowers will be yellow or white?

 Nov 26, 2014

Best Answer 

 #2
avatar+128707 
+13

1/3 + 1/4   =

4/12 +  3/12 =

7/12

Hey, livelove.....let me show you a quick trick for adding fractions whose denominators are different and whose numerators are 1

Add the denominators....then... multiply the denominators.....then...put the first over the second.....

So...for the above...we have

3 + 4   = 7    and   3 * 4   =12     so we have

7 / 12

 Nov 26, 2014
 #1
avatar+1667 
+13

You'd have to find the LCD again. Both denominators have the lowest multiple of 12 (4*4 is 12 and 4*3 is 12). Multiply the numerators by the number the denominators were multiplied by (1*3 and 1*4). The final equation would be 3/12*4/12=7/12. 7/12 of the flowers were either yellow or white.

 Nov 26, 2014
 #2
avatar+128707 
+13
Best Answer

1/3 + 1/4   =

4/12 +  3/12 =

7/12

Hey, livelove.....let me show you a quick trick for adding fractions whose denominators are different and whose numerators are 1

Add the denominators....then... multiply the denominators.....then...put the first over the second.....

So...for the above...we have

3 + 4   = 7    and   3 * 4   =12     so we have

7 / 12

CPhill Nov 26, 2014
 #3
avatar+9 
+5

thanks for the help

 Nov 26, 2014

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