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Answer:
a. r
b. -1m
c. 4m
Answered by
1
Answer:
a). +r
b). -m
c). 4m
Step-by-step explanation:
a). x + (-x) + r
= x - x + r ∵ (+) + (-) = -
= 0 + r
= +r Ans
b). 2m + 3m + (-6m)
= 2m + 3m - 6m ∵ (+) + (-) = -
= 5m - 6m
= -m Ans
c). 2m + (-2m) + 4m
= 2m - 2m + 4m ∵ (+) + (-) = -
= 2m + 4m - 2m
= 6m - 2m
= 4m Ans
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