Question

Add:

(i) 3mn, – 5mn, 8mn, – 4mn​

Answer 1

$\huge\underline\mathrm{SOLUTION:-}$

When term have the same algebraic factors, they are like terms.

Then, we have to add the like terms

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

= 3mn - 5mn + 8mn - 4mn

= mn (3 - 5 + 8 - 4)

= mn (11 - 9)

= mn (2)

= 2mn

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Answer 2

Answer:

(i) 3mn+– 5mn+8mn+– 4mn

11mn-9mn

2mn