Add :
(i) $3 m n, - 5 m n, 8 m n, - 4 m n$
(ii) $t - 8 t z, 3 t z - z, z - t$

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Solution

(1) The given terms for addition are $3 m n, - 5 m n, 8 m n, - 4 m n$

$= 3 m n + (- 5 m n) + 8 m n + (- 4 m n)$

$= 3 m n - 5 m n + 8 m n - 4 m n$

$= 11 m n - 9 m n = 2 m n (a n s w e r)$

(2 )Similarly the given terms for addition operation are $t - 8 t z, 3 t z - z, z - t$

$= (t - 8 t z) + (3 t z - z) + (z - t)$

$= t - 8 t z + 3 t z - z + z - t$

$= - 5 t z (a n s w e r)$

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Question 2 (i)

Add:

3mn, -5mn, 8mn, -4mn

t - 8 t z, 3 t z - z, z - t

3 m n, - 5 m n, 8 m n, 4 m n

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