YOU SAID:
I don't know I'm bad at math and very tired
INTO JAPANESE
私は数学が悪い非常に疲れているのか分からない
BACK INTO ENGLISH
Do not know what math is bad I have been very tired
INTO JAPANESE
どのような数学が悪い非常に疲れていた私はわからない
BACK INTO ENGLISH
What mathematics was bad I was very tired I do not know
INTO JAPANESE
どのような数学は悪かった私は非常に疲れていた私は知らない
BACK INTO ENGLISH
What mathematics was wrong I was very tired I do not know
INTO JAPANESE
どのような数学は間違っていた私は非常に疲れていた私は知らない
BACK INTO ENGLISH
What mathematics was wrong I was very tired I do not know
You've done this before, haven't you.