Answer:
2
Step-by-step explanation:
When it comes to like terms, they have to end with the same symbol A.K.A variables, exponents, and numbers.
1 + 9 + 3u
There are two terms, constants and variables, constant being 1 and 9 while variable being 3u.
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B is correct because you wouldn't get the same answer as the other proportions if you solved it
Answer:
Step-by-step explanation:
4^(4-7+1) = 4^-2