Question

verify the communicating law of addition for the following pairs of rational numbers -5/7 3/4​

Answer 1

Answer:

L.H.S-5/7+3/4=3/4-5/7

-5/7+3/4=-20+21/28

=1/28

RHS

3/4-5/7=21-20/28

=1/28

LHS = RHS

HENCE, VERIFIED.

Answer 2

↪Question :-

• Verify the commutative law of addition for the following pairs of rational numbers $\sf {\dfrac {-5}{7}}$ and $\sf {\dfrac {3}{4}}$.

↪Solution :-

Given :

• The two pair of rational numbers = $\sf {\dfrac {-5}{7}}$ and $\sf {\dfrac {3}{4}}$

To Find :

• Verify the commutative law of addition for the following pairs of rational numbers .

In commutative law of addition two numbers are add as (a+b) or (b+a) , both having same value.

Here , a = $\sf {\dfrac {-5}{7}}$ and b= $\sf {\dfrac {3}{4}}$

$\sf{: \implies{(a + b) = (b + a)}} \\ \\ \sf{: \implies{ \dfrac{ - 5}{7} +\dfrac{ 3}{4} = \dfrac{ 3}{4} +\dfrac{ - 5}{7}}} \\ \\ \sf{ :\implies{ \dfrac{ - 20 + 21}{28} = \dfrac{21 + ( - 20) }{28}}} \\ \\ \sf{ :\implies{ \dfrac{1}{28} = \dfrac{1}{28}}}$

$\bf {\therefore{Verified.}}$

$\rule {307}{2}$