# Equasions With Fractional Coefficients

• May 1st 2007, 08:28 AM
alwaysalillost
Equasions With Fractional Coefficients
Solve and check each of the following.

1. 2x/7 + 3x/2 = 25/7

2. x-2/2 - x+2/4 = 1/2

3. 2.4x - 1.2x = 4.8

Please explain to me how to find the answers to these questions. My teacher is giving me a test on problems like these and I'm trying to study for it but I need help in understanding these problems. :confused: Any help is appreciated.
• May 1st 2007, 08:48 AM
janvdl
Always multiply with the smallest factor of all the numbers.

1. 2x/7 + 3x/2 = 25/7 [The smallest factor is 14 so multiply straight through with 14]

then 4x + 21x = 50
25x = 50
x = 2

----------

2. (x-2)/2 - (x + 2)/4 = 1/2 [the smallest factor is 4]
then 2x - 4 - x - 2 = 2
x - 6 = 2
x = 8

------------

3. 2,4x - 1,2 x = 4,8
[Now we only simplify]
1,2x = 4,8
[divide by 1,2 on both sides]
and then x = 4

Hope this helps! :)
• May 1st 2007, 09:18 AM
alwaysalillost
Thanks Janvdi. It really did help. Thanks again!