please do this question: 3/2a - 5/6a
回答 (13)
2008-08-11 7:28 am
✔ 最佳答案
Guessing that the a's are meant to be on the bottom of the fraction, if not, please supply with additional parenthesis to be more specific:3 / (2a) - 5 / (6a)
LCD here is 6a:
9 / (6a) - 5 / (6a)
Subtract the numerators:
4 / (6a)
Can be reduced to:
2 / (3a)
2008-08-11 7:38 am
= 3/2a - 5/6a
= 9/6a - 5/6a
= 4/6a
= 2/3a
Answer: 2/3a
Checking (going back to 3/2a):
= 2/3a + 5/6a
= 4/6a + 5/6a
= 9/6a
= 3/2a
= 9/6a - 5/6a
= 4/6a
= 2/3a
Answer: 2/3a
Checking (going back to 3/2a):
= 2/3a + 5/6a
= 4/6a + 5/6a
= 9/6a
= 3/2a
2008-08-11 12:53 pm
3/2a - 5/6a
= 3(3)/3(2a) - 5/3(2a)
= (9 - 5)/3(2a)
= 4/3(2a) (divide 2 & 4 by 2)
= 2/3a
= 3(3)/3(2a) - 5/3(2a)
= (9 - 5)/3(2a)
= 4/3(2a) (divide 2 & 4 by 2)
= 2/3a
2008-08-11 7:53 am
As written, your question COULD be read as :-
3 / (2a) - 5 / (6a)
Questions must be presented properly :-
(3/2) a - (5/6) a
(9/6) a - (5/6) a
(4/6) a
(2/3) a
3 / (2a) - 5 / (6a)
Questions must be presented properly :-
(3/2) a - (5/6) a
(9/6) a - (5/6) a
(4/6) a
(2/3) a
2008-08-11 7:28 am
3/2a - 5/6a equals 9/6a - 5/6a equals 4/6a which can be simplified to 2/3a
Man I learnt that half my life ago..lol
Man I learnt that half my life ago..lol
2008-08-11 7:28 am
3/2a-5/6a
9/6a-5/6a
4/6a
2/3a
you make the denominators equal then subtract. simplify
9/6a-5/6a
4/6a
2/3a
you make the denominators equal then subtract. simplify
2008-08-11 7:28 am
3/2a= 9/6a-5/6a= 4/6a= 2/3a
2008-08-11 7:28 am
5/6a
[what am i answering?]
[what am i answering?]
2008-08-11 7:27 am
a = 15/6
2008-08-11 7:27 am
3/2a - 5/6a = 9/6a - 5/6a
= 4/6a
= 4/6a
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