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7x-3+3x=-53 what is the value of 4x+9

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7x-3 + 3x = -53
7x + 3x - 3 = -53
10x - 3 = -53
10x = -53 + 3
10x = -50
x = -5
Therefore 4x + 9 is equal to 4 times (-5) plus 9
-20 + 9 equals -11

Posted on Dec 19, 2008

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It is a fractional formula in which the top and bottom line are algebraic polynomials, whether low order (like x + 1) or higher order (like 4x^3 + 8x^2 - 7x + 5). See here

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Thanks
Zulfikar ali
ali_zulfikar@yahoo.com
9899780221

Jan 30, 2009 | SoftMath Algebrator - Algebra Homework...

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