Question

plz answer the following​

Answer 1

Answer:

i)4mn

ii)2a+4

Step-by-step explanation:

i) 6mn+(-5mn)+3mn

=6mn-5mn+3mn

=mn(6-5+3)

=mn(4)

=4mn

ii)(a+b-3)+(a-b+7)

=a+b-3+a-b+7

=2a+4

Answer 2

Answer:

(i- 4mn (ii- 2a + 4

Step-by-step explanation:

(i- 6mn + (-5mn) + 3mn

=> 9mn + (-5mn)

=> 9mn - 5mn

=> 4mn

(ii- a+b-3 + a-b+7

=> Rearrange Them By Their Order

=> a + a + b + (-b) -3 + 7

=> 2a + b - b + 4

=> 2a + 4

Hope It Helps You ; )