-2(x-4)=3(5-x)
was x=7 the answer i was supposed to get?
2007-09-08 04:44:16 · 6 answers · asked by Victoria 1 in Science & Mathematics ➔ Mathematics
-2x + 8 = 15 - 3x
3x - 2x = 15 - 8
x = 7
2007-09-11 21:01:41 · answer #1 · answered by Como 7 · 0⤊ 0⤋
-2x + 8 = 15 - 3x
x = 7
Yes, 7 is the answer.
You can always double check your answer by plugging the answer into the original equation. For instance:
-2(7 - 4) = 3(5 - 7)
-2 * 3 = 3 * -2
2007-09-08 11:47:15 · answer #2 · answered by cjcourt 4 · 0⤊ 0⤋
- 2(x - 4) = 3(5 - x)
Simplify both sides of the equation:
- 2x + 8 = 15 - 3x
Switch the items so that like terms are grouped together.
Transfer + 8 to the right, it becomes - 8; transfer - 3x to the left, it becomes + 3x.
- 2x + 3x = 15 - 8
Simplify again both sides.
x = 7
Answer: x = 7; there you've got it. Is this O.K. with you?
2007-09-12 04:51:38 · answer #3 · answered by Jun Agruda 7 · 3⤊ 0⤋
Distribute:
-2x+8=15-3x
Combine like terms:
-2x+3x=15-8
x=7
You are correct.
2007-09-08 11:46:30 · answer #4 · answered by victoria 5 · 0⤊ 0⤋
multiply and collect terms
3x-2x=15-8
so x=7
2007-09-08 12:10:10 · answer #5 · answered by Anonymous · 0⤊ 0⤋
-2x+8=15-3x
x+8=15
x=15-8
x=7
yup you're right
2007-09-08 11:47:17 · answer #6 · answered by Trew 2 · 0⤊ 0⤋