90+45+X=180, what does X=? * Your ansiyer
2 answers:
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Answer:
Step-by-step explanation:
You have to group all of the same one's together and however many there is, you add that number as the exponent.
There were 2 "(-2)" so that became , and there were 5 "7" so that became
. You keep the symbol and put it together which became