1 - 3x / 2 = 2x + 5 / 4
2007-03-26 02:14:55 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
1 - 3x / 2 = 2x + 5 / 4
4(1) - 4(3x/2) = 4(2x) + 4(5/4
4 - 6x = 8x + 5
4 - 6x + 6x = 8x + 5 + 6x
4 = 14x + 5
4 - 5 = 14x + 5 - 5
- 1 = 14x
- 1 / 14 = 14x / 14
- 1/14 = x
- - - - - - - - - -s-
2007-03-26 03:51:23 · answer #1 · answered by SAMUEL D 7 · 1⤊ 0⤋
(1 - 3x) / 2 = (2x + 5) / 4
Cruzando:
4(1-3x) = 2(2x +5)
4 - 12x = 4x + 10
-12x - 4x = 10 -4
-16x = 6
x = -3/8
Solução: {x pertence a R | x = -3/8}
::v::
2007-03-26 02:52:00 · answer #2 · answered by aeiou 7 · 0⤊ 0⤋
4(1 - 3x/2) = 4(2x + 5/4)
4 - 12x/2 = 8x + 5
4 - 6x = 8x + 5
-14x = 1
x = -1/14
(P.S, it's not -3/8. Don't believe me? Plug -3/8 into the original equation - it doesn't work out.)
2007-03-26 02:30:15 · answer #3 · answered by JOhn M 5 · 0⤊ 1⤋
1 - 3x / 2 = 2x + 5 / 4
cross multiply
4(1-3x) = 2(2x+5)
4 - 12x = 4x + 10
-12x - 4x = 10 - 4
-16x = 6
x = - 6/16
x = -3/8
2007-03-26 02:19:30 · answer #4 · answered by Bill F 6 · 0⤊ 1⤋
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2016-11-23 16:30:49 · answer #5 · answered by Anonymous · 0⤊ 0⤋
1-3x/2=2x+5/4
1-5/4=2x+3x/2
-1/4=7x/2
x=-1/14
2007-03-26 02:20:57 · answer #6 · answered by chapani himanshu v 2 · 1⤊ 1⤋