SOLUTION: Pls help me to solve these 2 problems.Thanks in advance. 1. p=l + m/f Calculate m 2.- x-1/3 + 4x = 2/3 + 13x-2/3 Thanks again

Algebra ->  Equations -> SOLUTION: Pls help me to solve these 2 problems.Thanks in advance. 1. p=l + m/f Calculate m 2.- x-1/3 + 4x = 2/3 + 13x-2/3 Thanks again      Log On


   

Question 159910: Pls help me to solve these 2 problems.Thanks in advance.
1. p=l + m/f Calculate m
2.- x-1/3 + 4x = 2/3 + 13x-2/3
Thanks again
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
1. p = l + m%2Ff Calculate m
:
Subtract l from both sides
p - l = m%2Ff
:
Multiply both sides by f
f(p-l) = m
:
:
2. -x-1/3 + 4x = 2/3 + 13x-2/3
:
This is very ambiguous. Assume you mean:
-%28%28x-1%29%29%2F3 + 4x = 2%2F3 + %28%2813x-2%29%29%2F3
Multiply each term by 3, to get rid of the denominators, results
-(x-1) + 3(4x) = 2 + 13x - 2
:
-x + 1 + 12x = 13x; (removing the bracket changes the signs when it's neg)
:
11x + 1 = 13x
:
1 = 13x - 11x
:
2x = 1
x = 1%2F2
:
If this is not what you mean, tell me what you do mean, use brackets.