4x +35x-15=9x-45
39x-15=9x-45
+15 +15
---------------------
39x=9x-30
-9x -9x
30x=-30
----- ----
30 30
x=-1
2006-10-14 16:54:19
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answer #1
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answered by ღღღ 7
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4x + 5(7x - 3) = 9(x - 5)
4x + 35x -15 = 9x - 45
39x - 15 = 9x - 45 (Subtract 9x and add 15 to both sides)
30x = -30 (Divide both sides by 30)
x = -1
Check:
4(-1) + 5 (7(-1) - 3) = 9((-1) - 5)
-4 + 5 (-7 - 3) = 9(-1 - 5)
-4 + 5(-10) = 9(-6)
-4 - 50 = -54
-54 = -54
QED
2006-10-15 08:00:53
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answer #2
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answered by CSUFGrad2006 5
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Start with distributive properties:
4x + 35x - 15 = 9x - 45 Combine like terms
39x - 15 = 9x - 45 Subtract 9x from each side
30x - 15 = -45 Add 15 to each side
30x = -30
x = -1
2006-10-14 16:44:05
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answer #3
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answered by PatsyBee 4
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5 - 3 ( 4x - 3) + 9x = -7( 2x - 7 ) - 14 5 - 12x + 9 + 9x = -14x + forty 9 - 14 4 - 3x = -14x + 35 -3x = -14x + 31 11x / 11 = 31/11 basically undergo in strategies that as quickly as a destructive is superior via a destructive it turns right into a great. -7 X -7 = forty 9 no longer - forty 9.
2016-12-26 19:33:38
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answer #4
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answered by ? 3
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4x + 5(7x - 3) = 9 (x - 5)
4X + (5 x 7X) - (3 x 5) = (9 x X) - (9 x 5)
4X + 35X - 15 = 9X - 45
39X - 15 = 9X - 45
30X = -30
x = -1
2006-10-14 18:17:31
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answer #5
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answered by TheresaE 2
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The Problem is very simple ~ Just open the brackets the equation becomes :
4x + 35x -15 = 9x - 45
Move all the 'x' factors to one side and the numbers to the other side that is -
39x - 9x = 15-45
30x = -35
x = -35/35 = -1
that's it
2006-10-14 17:34:13
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answer #6
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answered by Alrahcam 4
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4x + 5(7x - 3)=9(x - 5)
4x+35x-15=9x-45
4x-9x=-45+15
-5x=-30
x=6
2006-10-14 16:56:28
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answer #7
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answered by yupchagee 7
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4x + 35x - 15 = 9x - 45
39x - 9x = -45 + 15
30x = -30
x = -1
2006-10-14 16:41:32
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answer #8
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answered by James L 5
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Do your own homework...If you always ask people on Yahoo Answers to do it for you, you will not learn. All of your questions today were for your homework...and the reason why you wanted to see the work is because YOUR TEACHER DID TOO. Don't be lazy and do the little bit of work that is expected of you.
PS: The reason why you are not good at it is because YOU GET OTHERS TO DO IT FOR YOU!!!
2006-10-14 18:21:33
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answer #9
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answered by Niels B 2
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-1
2006-10-14 16:47:07
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answer #10
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answered by sampath k 2
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