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Effectus [21]
3 years ago
7

How do I do 1 and 5?

Mathematics
1 answer:
Nat2105 [25]3 years ago
8 0
I will show you how to do #5:

a).   -20 + 2(n-1)        Original Expression
       -20 +2n - 2          Distributive Property
       -22 + n                Combine Like Terms


Final Expression: -22 + n


b).  1.5 + (-2.5)(n -1)     Original Expression 
       1.5 + -2.5n + 2.5     Distributive Property
       4 - 2.5n                     Combine Like Terms 


Final Expression: 4 - 2.5n




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