I'm trying to solve this problem but it always fails the tests.
here's my solution:
(= (- 10 (* 2 3)) 4)
I tried this on Chrome and Firefox, same result.
You just enter the answer for the blank, not the whole thing.
In this case: (= (- 10 (* 2 3)) __)
You've correctly identified that the __
should be replaced with 4, and that's what you enter in the box.
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