Perform the operation involving rational numbers. $\frac { 13 } { 45 } + \frac { 9 } { 20 }$
A) $\frac { 133 } { 179 }$
B) $\frac { 180 } { 133 }$
C) $\frac { 133 } { 180 }$
D) $\frac { 133 } { 360 }$

Question

Quizplus · Accepted Answer

To add these fractions, we need to find a common denominator: 
$$\frac{13}{45} + \frac{9}{20} = \frac{13 \cdot 4}{45 \cdot 4} + \frac{9 \cdot 9}{20 \cdot 9} = \frac{52}{180} + \frac{81}{180} = \frac{133}{180}$$
Therefore, the answer is choice C.

Perform the Operation Involving Rational Numbers 1345+920\frac { 13 } { 45 } + \frac { 9 } { 20 }4513​+209​

Perform the Operation Involving Rational Numbers $\frac { 13 } { 45 } + \frac { 9 } { 20 }$