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1/4x-3/8x=2
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1/3x-1/3=-5

2007-03-10 18:09:34 · 8 answers · asked by carebear 1 in Science & Mathematics Mathematics

8 answers

1/4x - 3/8x = 2
-0.125x = 2
x = -1/16

1/3x - 1/3 = -5
1/3x = -4 2/3
x = -14

2007-03-10 18:17:10 · answer #1 · answered by jake 5 · 0 1

1/4x - 3/8x = 2

8(1/4x) - 8(3/8x) = 8(2)

2x - 3x = 16

- x = 16

-1(- x) = -1(16

x = - 16

- - - - - - - - -

1/3x - 1/3 = - 5

1/3x - 1/3 + 1/3 = - 5 + 1/3

1/3x = - 15/3 + 1/3

1/3x = - 14/3

3(1/3x) = - (3)(14/3)

x = - 42/3

x = - 14

- - - - - - - - - - - -s-

2007-03-11 11:41:45 · answer #2 · answered by SAMUEL D 7 · 0 0

i)1/4x-3/8x=2
2/8x -3/8x=2
x(-1/8) = 2
x = -16
ii)1/3x-1/3=-5
1/3x=-4/2/3
x =-14

2007-03-11 03:33:47 · answer #3 · answered by Anonymous · 0 0

1/4x-3/8x=2 find LCD on LHS
2x/8-3x/8=2
-x/8=2
x=-16
unless x is in the denominator, in which case
1/4x-3/8x=2
2/8-3/8=2x
-1/8=2x
x=-116
next question
1/3x-1/3=-5
if you mean
x/3-1/3=-5
x/3-1/3=-15/3
x/3=14/3
x=14
or if you mean for x to be in the denominator
1/3x-1/3=-5
1/3-x/3=-5x
1/3=-14x/3
1=-14x
x=-1/14

2007-03-11 03:33:32 · answer #4 · answered by yupchagee 7 · 0 1

First Question
I am guessing that question should read as:-
(1/4)x - (3/8)x = 2
2x - 3x = 16
- x = 16
x = - 16

Next Question!
(1 / 3).x - (1/3) = - 5
x - 1 = - 15
x = - 14

2007-03-11 04:51:03 · answer #5 · answered by Como 7 · 0 0

1/4x-3/8x=2
LCF(4 and 8) = 8
2x - 3x = 16
-x = 16
x = -16
....
1/3x-1/3=-5
x/3 = -5 + 1/3
x/3 = -14/3
x = -14
::==::

2007-03-11 03:20:57 · answer #6 · answered by aeiou 7 · 0 0

if your question is

1/(4x) - 3/(8x) = 2

then, multiply both sides by 8x

2 - 3 = 16x

-1 = 16x

x=-1/16

second question:

1/(3x) - 1/3 = 5

1/(3x) = 5 + 1/3

1/(3x) = 16/3

1/x = 16

x = 1/16

2007-03-11 03:20:42 · answer #7 · answered by datz 2 · 0 1

the first one is x=16
the second one is x=14
im not really sure if im correct though

2007-03-11 03:20:16 · answer #8 · answered by Anonymous · 0 1

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