Combine like terms
7x+15-5x+15=-2
2x+15+15=-2
2x+30+2=0
2x=-32
x= -16
2006-12-18 14:13:54
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answer #1
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answered by Pace 5
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first u do the number in the term of x
7x-5x = 2x
then, u do the number without x
15 + 15 = 30
7x+15-5x+15 = -2
2x + 30 = -2
Move the 30 at right hand side
so it will become
2x = -2-30
2x = -32
x = -32/2
x = -16
2006-12-18 22:17:07
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answer #2
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answered by miss_ooO 2
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Simplifying is adding all the like terms together.
In this case you can add (7x -5x) + (15+15) = -2
so this simplifies to 2x + 30 = -2
solved =
2x/2 = -32/2
x= -16 maybe superfluous but oh well
2006-12-18 22:15:22
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answer #3
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answered by mantehbunnies 2
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7x - 5x + 15 + 15 = -2
2x + 30 = -2
Subtracting 30 from both sides:
2x + 30 - 30 = -2 - 30
2x = -32
Dividing both sides by two:
2x/2 = -32/2
x = -16
2006-12-18 22:13:29
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answer #4
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answered by Groucho Returns 5
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7x+15-5x+15=-2
2x+30=-2 (combine terms)
2x=-32 (subtract 30 from both sides)
x=-16(divide by 2)
2006-12-18 22:21:04
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answer #5
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answered by Magie 2
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7x-5x =2x 15+15=30
2x + 30 = -2
2x + 30-30 -2-30
2x = -32
-32/2 = -16
x= -16
2006-12-18 22:18:55
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answer #6
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answered by Debby B 6
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7x+15-5X+15=-2
rearrange this equation
7x-5x+15+15=-2
2x+30=-2
2X=-2-30
2x=-32
x=-32/2
x=-16
NOw you can check it by putting the value of X
7(-16)+15-5(-16)+15=-2
-112+15+80+15=-2
-112+110=-2
110-112 = -2 -------------------> (proved)
2006-12-18 22:19:41
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answer #7
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answered by Anonymous
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7x+15-5x+15=-2
first u need to add or subtract the numbers that u have in the equation to get this
2x+30=-2
then u need to subtract the 30 to the other side to solve for x to get this
2x=-32
then u need to divide the 2 from both sides to get the x
x=-16
that is the way to do it
2006-12-18 22:16:47
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answer #8
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answered by First L 1
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combine the 7x and the -5x, and you get 2x
then combine the 15 and 15 to get 30
so its 2x+30=-2
add 2 to both sides to get:
2x+30=0
minus 30 on each side to get
2x= -30
then divide each side by 2 to get..
i think -30 divided by 2 is -15(possibly positive 15)...so then x= -15!
2006-12-18 22:14:35
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answer #9
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answered by Megan 2
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Combine Like terms to start
2x + 30 = -2
Subtract 30 from each side
2x = -32
Divide both sides by 2
x = -16
2006-12-18 22:12:47
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answer #10
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answered by novadeath69 2
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