Question

the sum of minus 4 by 5 and 2 by 5 by the product of 3 by 10 and 8 by 5​

Answer 1

The sum of (-4/5) and (2/5) by the product of (3/10) and (8/5) is (-1/2)

Step-by-step explanation:

We can write it as,

The sum of (-4/5)+(2/5)

Here we see that denominator of two fraction is 5 so we simply add the numerator.

= (-4+ 2)/5 =-2/5

The product of 3 /10 and 8/3 = (3/ 10 ) × ( 8/ 3)

= 4/5

According to question,

(-2/ 5)/(4/5) =(-2/5)÷(4/5) = (-2/5) × (5/4) = -1/2

Answer 2

Given:

Fractions: -4/5, 2/5, 3/10, and 8/5

To find:

The sum of minus 4 by 5 and 2 by 5 by the product of 3 by 10 and 8 by 5​

Solution:

The sum of minus 4 by 5 and 2 by 5 by the product of 3 by 10 and 8 by 5​ is 1/30.

We can find the sum by following the given steps-

We know that the given fractions can be stated as follows-

As per the question, we have to find out the following.

=(-4/5)+(2/5)/(3/10×8/5)

On solving it, we get

=(-4/5)+(2/5)/(24/50)

=(-4/5)+(2/5×50/24)

=(-4/5)+(10/12)

=(-4/5)+(5/6)

=-4/5+5/6

Taking the LCM of 5 and 6, we get 30.

So, now the sum becomes (-24/30+25/30)

=(25-24)/30

=1/30

Therefore, the sum of minus 4 by 5 and 2 by 5 by the product of 3 by 10 and 8 by 5​ is 1/30.