Perform the indicated operations.
-$$\frac { 2 } { 15 x } + \frac { 4 } { 21 x ^ { 2 } }$$
A) $\frac { 6 } { 15 x + 21 x ^ { 2 } }$
B) $\frac { 6 } { 315 x ^ { 2 } }$
C) $\frac { 2 ( 7 x + 10 ) } { 105 x }$
D) $\frac { 2 ( 7 x + 10 ) } { 105 x ^ { 2 } }$

Question

Quizplus · Accepted Answer

To add the fractions, find a common denominator, which is $315x^2$. Rewrite each fraction with this common denominator and add them: $\frac{2 \times 21x}{315x^2} + \frac{4 \times 15}{315x^2} = \frac{42x + 60}{315x^2}$. Simplify to $\frac{2(7x + 10)}{105x^2}$.

Perform the Indicated Operations 215x+421x2\frac { 2 } { 15 x } + \frac { 4 } { 21 x ^ { 2 } }15x2​+21x24​

Perform the Indicated Operations $\frac { 2 } { 15 x } + \frac { 4 } { 21 x ^ { 2 } }$