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Popular >

simplify (3x^2-9x)/(7x-21)

Solution

simplify

\frac{3 x ^{2} - 9 x}{7 x - 21}

Solution

\frac{3 x}{7}

Solution steps

\frac{3 x ^{2} - 9 x}{7 x - 21}

Factor

3 x^{2} - 9 x : 3 x (x - 3)

= \frac{3 x ( x - 3 )}{7 x - 21}

Factor

7 x - 21 : 7 (x - 3)

= \frac{3 x ( x - 3 )}{7 ( x - 3 )}

Cancel the common factor:

x - 3

= \frac{3 x}{7}

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Frequently Asked Questions (FAQ)

What is (3x^2-9x)/(7x-21) ?
The solution to (3x^2-9x)/(7x-21) is (3x)/7