Question

6. Verify that a + b = b + a if a=
-8/5 and b= 7/20
​

Answer 1

Step-by-step explanation:

a+b=-8\5+7/20

=-32+7/20

= - 25/20

=_5/4

now

b+a=7/20+(- 8/5)

=7-32/20

= -25/20

= -5/4

verified

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Answer 2

Answer:

Step-by-step explanation:

Concept:

We have to use the concept of sum of fractions.

Given:

The given equation is $a + b = b + a$ , and the value of $a$ is $\frac{-8}{5}$ and the value of $b$ is $\frac{7}{20}$ .

To Find:

We have to prove the equation.

Solution:

Here the value of  $a$ is $\frac{-8}{5}$ and the the value of $b$ is $\frac{7}{20}$ .

First we have to get the value of L.H.S of the equation.

The L.H.S is $a + b$

Put the value here

$a + b=\frac{-8}{5} +\frac{7}{20}$

The sum will be $\frac{-8}{5} +\frac{7}{20}=\frac{(-32+7)}{20} =\frac{-25}{20}$

We need to make it small

So the answer will be $\frac{-5}{4}$ .

In the R.H.S, the expression is almost same which is $\frac{-5}{4}$.

So we can say that the sum value will be also be same.

We can say that R.H.S=L.H.S.

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