simplify (3x)/(3x+21)*((x+7)/(9x^2) assume that all expressions are defined

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simplify (3x)/(3x+21)*[(x+7)/(9x^2)] assume that all expressions are defined

Guest Feb 9, 2015

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Best Answer

$$\frac{3x(3x+21)}{(x+7)(9x^2)}=\frac{9x(x+7)}{(x+7)9x^2}=\frac{1}{x}$$

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Alan Feb 9, 2015

Alan · Answer 1 · 2015-02-09T08:45:40

$$\frac{3x(3x+21)}{(x+7)(9x^2)}=\frac{9x(x+7)}{(x+7)9x^2}=\frac{1}{x}$$

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