3/x + 3/2x = 2 how?
2009-05-16 3:50 pm
sorry, this was psoeted before, but i done it wrong...this the the corect formula
回答 (8)
2009-05-16 3:55 pm
✔ 最佳答案
6/(2x) + 3/(2x) = 4x/(2x) <-- Put all terms over common denom6+3 = 4x
4x = 9
x = 9/4
2009-05-16 10:56 pm
I'll assume you want to find x.
3/x + 3/2x = 2
Multiple both sides by 2x.
6 + 3 = 4x
Simplify, then divide by 4 to get..
x = 9 / 4 = 2.25
3/x + 3/2x = 2
Multiple both sides by 2x.
6 + 3 = 4x
Simplify, then divide by 4 to get..
x = 9 / 4 = 2.25
2009-05-16 10:54 pm
Find the lcd then add then cross multiply.
x=9/4
You cant add fractions that dont have the same denominator so you have to make 3/x and 3/2x equal you would multiply the first one by 2 to make them equal.
x=9/4
You cant add fractions that dont have the same denominator so you have to make 3/x and 3/2x equal you would multiply the first one by 2 to make them equal.
2009-05-16 11:51 pm
3/x + 3/(2x) = 2
2x[3/x + 3/(2x)] = 2x(2)
6 + 3 = 4x
4x = 9
x = 9/4
2x[3/x + 3/(2x)] = 2x(2)
6 + 3 = 4x
4x = 9
x = 9/4
2009-05-16 11:05 pm
@ Dan O: no you don't. that's for division. and it's "reciprocal"
answer is 9/4
when you have fractions, it's always easier to multiply the expressions to get the simplest common denominator. In this expression, it's 2x.
first answer is right.
answer is 9/4
when you have fractions, it's always easier to multiply the expressions to get the simplest common denominator. In this expression, it's 2x.
first answer is right.
2009-05-16 11:02 pm
...3......3
[------+------=2]2x
..x.......2x
6+3=4x
9=4x
x=9/4 answer//
[------+------=2]2x
..x.......2x
6+3=4x
9=4x
x=9/4 answer//
2009-05-16 11:00 pm
Errr.... apparently I am off... I hate Fractions
2009-05-16 10:55 pm
Because it adds to equal 6/3x. Divide it, and x= 2
=]
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