SOLUTION: Solve for x. a+x=b The answer I got is x=b-a. When I checked my answer on a calculator that shows the steps it showed a-x=b and then switched it to x=-a+b for the final answer. W

Question 1011859: Solve for x.
a+x=b
The answer I got is x=b-a. When I checked my answer on a calculator that shows the steps it showed a-x=b and then switched it to x=-a+b for the final answer. Which answer is correct? If x=-a+b is the answer why when my answer is simpler?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
and are equivalent expressions.

Start with . Use the commutative property to swap the terms "-a" and "b" to get . When you add on a negative, you're really subtracting. So turns into . All of this shows how and are equivalent.
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