Answer:
i) 2a+3b-c
= 2×1+3×-1-2
= 2-3-2
=-3
ii) 5+a+b
= 5+1+(-1)
=6-1
=5
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Answer:
i) 2a+3b-c
= 2×1+3×-1-2
= 2-3-2
=-3
ii) 5+a+b
= 5+1+(-1)
=6-1
=5