Like terms are when you have 2 of the same coefficent disregarding the amount of numbers. you can add or subtract them to simplify in other words.

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2. 7.6352 x 10-3 kg ( This is scientific notation) [ If you want —> Standard notation]
7.6352 x 10^ -3 kg = 0.0076352 kg
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I hope I helped you^_^
Answer: of what?
Step-by-step explanation:
You have to remeber that you have to have a number that is less than 10, but equal or greater than 1! Okay since your trying to get between 1-10 with this number you would move the decimal point 5 places to the right. And since you are going back it is going to be negative so the answer would be 6.72*10^-5