Question

subtract m(n-5) from n(m-6) please tell the answer ?​

Answer 1

Answer:

Part(i)

Add

=m−n+m+n=2m

Subtract

=m−n−m−n=−2n

Part(ii)

Add

=mn+5−2+mn+3=2mn+6

Subtract

=mn+5−2−mn−3=0

Hence, this is the answer.

Answer 2

Answer:

Addition/subtraction of two positive integers gives a positive integer as (+)+(+)=(+)

(+)+(+)=(+)

or(+)−(+)=(+)

(+)−(+)=(+)

.

2. Addition of two negative integers gives a negative integer as (−)+(−)=(−)

(−)+(−)=(−)

3. When we have a positive and a negative integer, we have to find the difference between them and then consider the sign of the highest integer.

The properties of multiplication of integers is as below,

+×+ = ++×− = −−×+ = −−×− = +

+×+ = ++×− = −−×+ = −−×− = +

Let us solve the first part of question i.e., addition and subtraction of (m-n) and (m+n), we get

= (m-n) + (m+n)

=m-n+m+n

Cancelling the similar terms, we get

= 2m

Thus, addition of (m-n)+(m+n) is 2m.

Now, we will subtract (m-n) and (m+n), we get

= (m-n) – (m+n)

=m-n-m-n

Cancelling the similar terms, we get

=-2n

Thus, subtraction of (m-n) - (m+n) = -2n

Now, let us solve the second part of the question i.e., addition and subtraction of (mn+5-2) and (mn+3).

= (mn+5-2) + (mn+3)

= (mn+3) + (mn+3)

= mn+3+mn+3

= 2mn+6

Thus, the addition of (mn+5-2) and (mn+3), we get 2mn+6.

Now, we will subtract (mn+5-2) and (mn+3), we get

= (mn+5-2) - (mn+3)

= (mn+3) - (mn+3)

= mn+3-mn-3

= 0