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Sever21 [200]
3 years ago
9

Simplify the expression: 7r–3r+9r

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
8 0

Answer:

13r

Step-by-step explanation:

all like variables so add the coefficient

7+(-3)+9

7-3+9

13

=13r

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