Question

12/13+15/21 is my quesrion ​

Answer 1

Answer:

$\frac{12}{13} + \frac{15}{21} =\frac{447}{273}$

Step-by-step explanation:

LCM of 13 and 21 is  273

$\frac{12}{13} + \frac{15}{21} =\frac{12 \times 21 + 15 \times 13}{273} \\= \frac{252+ 195}{273} \\ =\frac{447}{273}$

Answer 2

Answer:

The value of  $\frac{12}{13}+\frac{15}{21}$  is  $\frac{149}{91}$  or 1.63

Step-by-step explanation:

Given -

$\frac{12}{13}+\frac{15}{21}$

To find -

The value of  $\frac{12}{13}+\frac{15}{21}$

Solution -

For addition of fraction number both the denominator should be same.

Multiply 12/13 by 21/21 and 15/21 by 13/13 we get

= $\frac{252}{273} + \frac{195}{273}$

= $\frac{252+195}{273}$

= $\frac{447}{273}$

Divide by 3 we get

= $\frac{149}{91}$

Divide 149 by 91 we get

= $1.63$ (In Decimal)

∴ The value of  $\frac{12}{13}+\frac{15}{21}$  is  $\frac{149}{91}$  or 1.63