Question

find the sum and difference of the following expressions a-b and b-a

Answer 1

9514 1404 393

Answer:

• sum: 0
• difference: 2a -2b

Step-by-step explanation:

Sum

  (a -b) +(b -a) = a - a + b - b = 0

Difference

  (a -b) -(b -a) = a +a -b -b = 2a -2b

Answer 2

Answer:

free points

Step-by-step explanation:

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