you first need to change it to a higher common denominator, what does both 4 and 3 go into? 12 so change them both to 12 ths,,, divide the denominator, the 4 into 12,, multiply the answer by the top number,,, so its
3/4 = 9/12 do the same to the other
2/3 = 8/12 then you can add them
17/12 or 1 5/12
2006-12-04 16:30:37
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answer #1
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answered by dlin333 7
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3/3 = 1 and 4/4 = 1. If you multiply the fractions by 1, their amounts will not change, since 3/4 x 1 still = 3/4.
3/4 + 2/3 = 3/4(3/3) + 2/3(4/4)
Multiply the top numbers in the fractions and the bottom numbers in the fractions. Then add the top numbers of both fractions. You should get 17/12, which is equal to 12/12 + 5/12 or 1 5/12.
2006-12-05 00:33:49
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answer #2
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answered by alexandertheseventeenth 1
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When you are adding differing fractions together, you need to:
1) look at the denominators (the numbers on the bottom) first.
2) You need to figure out what these two numbers have in common. The easiest way to do this is to multiply these two numbers together.
3) 4 x 3 = 12. 12 is now your new denominator.
4) You need to do the same thing to the numerator as you did to the denominator.
5) Since you mulitplied 4 by 3 to get 12, you will have 3x3 = 9
Your new fraction is 9/12.
6) Since you mulitplied 4 by 4 to get 12, you will have 2x4 = 8
Your new fraction is 8/12.
7) Add the two fractions together by adding the numerators together, as the denominators are now the same.
9/12 + 8/12 = 17/12 - There's your answer.
2006-12-05 00:37:22
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answer #3
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answered by Dr. Funkenstein 2
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3/4 +2/3 =
Find a common denominator
?/4 + ?/3 =
common denominator is when you can find a common #
which in this case is 12
?/12 = ?/12
so you multiply the common denominator.
you multply the top number by the same number you multiplied the bottom # by and come up with
9/12 + 8/12= 17/12
to make into a whole # and fraction
subtract the top from the bottom of the sum
which makes make a base # which would be 1 5/12.
You try to make the fraction as small as possible.
2006-12-05 00:46:01
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answer #4
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answered by jaqui 2
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9/12 + 8/12 = 17/12 = 1 5/12
2006-12-05 00:42:00
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answer #5
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answered by J D 2
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