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Anonymous
7x - 2 = 4x + 9
3x - 2 = 9
3x = 11
x = 11/3
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The answer to the problem of 13 equals -4x plus 9 is x equals -1.
4x+5 = -9 4x = -9-5 4x = -14 x = -3.5
4x
-4x + 3y = 9
4x+9=25 4x=16 x=4