If P = 3a + 2b - c and Q = -7a + 4b + 8c then
find P + Q and Q + P. Are they same?
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Step-by-step explanation:
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Step-by-step explanation:
P + Q
=> 3a + 2b - c + (-7a + 4b + 8c)
=> 3a + 2b - c - 7a + 4b + 8c
=> -4a + 6b + 7c,,
Q + P
=> - 7a + 4b + 8c + (3a + 2b - c)
=> -7a + 4b + 8c + 3a + 2b - c
=> -4a + 6b + 7c,,
Yes, they are same.
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