Question

Hi please solve the above sum. No spamming. Thank you. Only for Mods.​

Answer 1

Step-by-step explanation:

9/11 and 2/13

Adding both the numbers,

=9/11+2/13

=(117+22)/143

=139/143

And 2/13+9/11

=(22+117)/143

=139/143

Therefore,

9/11+2/13=2/13+9/11.

Hence, commutative property is verified.

Answer 2

ANSWER

Commutative property for addition of rational numbers

• Two rational number can be added in any order .

• Thus (a/b )and (c/d ) are two rational number then a/b+c+d =c/d+a/b

$\green{a = \frac{ - 1}{3}} \: \: \: \: \: \: \: \: \red{b = \frac{1}{5}}$

$\purple{(\frac{ - 1}{3} + \frac{1}{5})} = \blue{( \frac{1}{5} + \frac{ - 1}{3})} \\ \\\red{ \frac{( - 5 + 3)}{(3 \times 5)}} =\green{ \frac{(3 + ( - 5)}{(5 \times 3)}} \\ \\ \frac{( - 2)}{35} = \frac{( - 2)}{35}$

$\orange{Hence \: \: \: \: proved}$