JS Calculator test case 9 question: formal logic vs immediate execution

1

For test case 9 it reads:

“The expression 5 - 9 + 5 should produce a result of 1
AssertionError: The expression 5 - 9 + 5 should produce a result of 1”

In my mind, this is immediate execution. If it were formal logic, then the equation would evaluate the 9+5 then evaluate 5-14 which would yield -9. Am I misunderstanding this? Shouldn’t the addition operator take precedence over the subtraction operator?

2

Addition and subtraction are the same weight. If you think about it, they’re the same operation. Read it this way: “5 plus -9 plus 5.”

They are the same weight, and processleft to right.

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