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kap26 [50]
3 years ago
9

Find the sum and the difference of the following expressions.

Mathematics
2 answers:
trasher [3.6K]3 years ago
8 0

Answer:

sum=2a

diff.=-2b

Step-by-step explanation:

a-b+a+b=

2a

a-b-a-b=-2b

qwelly [4]3 years ago
6 0
Sum :
a-b+(a+b)
a+a-b+b=2a

Difference:
a-b-(a+b)
a-b-a-b
-2b
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