Question

6.Add. 4 Marks

I) 3mn,-5mn,8mn,-4mn

ii) a+b-3,b-a+3,a-b+3​

Answer 1

Answer:

I) 3mn+ (-5mn)+8mn+(-4mn)

3mn-5mn+8mn-4mn

-2mn+4mn

2mn

ii) a+b-3+b-a+3+a-b+3

a-a+a+b+b-b-3+3+3

a+b+3

Step-by-step explanation:

hope it helps you

Answer 2

Step-by-step explanation:

1. 3mn+(-5mn)+(8mn)+(-4mn)

= (-2mn) + (4mn)

= 2mn

2. a+b-3 + b-a+3 + a-b+3

= a +b +3