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If ab=314,\displaystyle \frac{a}{b} = \frac{3}{14},ba=143, what is b−ab+a?\displaystyle \frac{b-a}{b+a}?b+ab−a?
If x2+8x−9x2−8x−9=x+9x−9,\displaystyle \frac{x^2+8x-9}{x^2-8x-9} = \frac{x+9}{x-9},x2−8x−9x2+8x−9=x−9x+9, what is x?x?x?
If a−ba+b=38 \frac{a-b}{a+b} = \frac{ 3} { 8 } a+ba−b=83, then find the value of
5a+3b5a−3b. \frac{ 5a + 3b } { 5a - 3b }. 5a−3b5a+3b.
If 7+x7−x=7,\displaystyle \frac{\sqrt{7}+x}{\sqrt{7}-x} = 7,7−x7+x=7, what is x?x?x?
If 20+x20−x=4,\displaystyle \frac{20+x}{20-x} = 4,20−x20+x=4, what is x?x?x?
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