Solve for x
1/2x + 5/7= 2/3
Simplify your answer as much as possible.
2007-07-25 11:41:22 · 10 answers · asked by Aimee R 1 in Science & Mathematics ➔ Mathematics
do your own work
2007-07-25 11:44:41 · answer #1 · answered by Anonymous · 0⤊ 4⤋
Question is unclear but reading it as:-
(1/2) x + 5 / 7 = 2 / 3 (which is clear!)
Multiply by 42:-
21 x + 30 = 28
21 x = - 2
x = - 2 / 21
2007-07-26 01:22:41 · answer #2 · answered by Como 7 · 1⤊ 0⤋
1/2x + 5/7 = 2/3
21 + 6x = 14x
21 = 14x - 6x
21 = 8x
21/8 = x
2 5/8 = x
2007-07-25 12:25:10 · answer #3 · answered by Josesito 1 · 0⤊ 0⤋
x = -2/21
2007-07-25 11:55:52 · answer #4 · answered by Larry P 1 · 1⤊ 0⤋
x= -2/21
2007-07-25 11:49:57 · answer #5 · answered by dragonvenuslily 1 · 1⤊ 1⤋
1/2x + 5/7 = 2/3
1/2x = 2/3 - 5/7 = 14/21 - 15/21 = -1/21
2x = -21
x = - 10.5
-1/21 + 15/21 = 14/21
2007-07-25 11:47:19 · answer #6 · answered by robertonereo 4 · 0⤊ 2⤋
(1/2)x + 5/7= 2/3
You want x with a coefficient of 1. What do you multiply 1/2 by to get 1? Hint: Try 2.
So multiply both sides by 2
x +10/7 = 4/3
Now add -10/7 to both sides
x=4/3 - 10/7
Doing the arithmetic...
x = 28/21 - 30/21
. . = -2/21
But you might want to check my arithmetic.
BUT: If you mean 1/(2x) + 5/7= 2/3,
Multiply both sides by 2x
1 + 10x/7=4x/3
Now both sides by 21
21+30x=28x
Add -21-28x to both sides
2x= -21
x= -21/2
2007-07-25 11:50:51 · answer #7 · answered by gugliamo00 7 · 0⤊ 2⤋
-2/21
2007-07-25 11:46:32 · answer #8 · answered by Lakerland resident 5 · 1⤊ 1⤋
X= -21/2
or
x=-10.5
2007-07-25 11:46:39 · answer #9 · answered by Mr. Self Destruct 3 · 1⤊ 1⤋
-2/21
2007-07-25 11:45:31 · answer #10 · answered by NJGuy 5 · 0⤊ 3⤋