please show me how you get the answer
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3 Answers

think of 'a' as being red t-shirts

so you have 7 red t-shirts and you are adding 1 more red t-shirt, therefore you have a total of 8 red t-shirts

so 7a + a = 8a
by Level 5 User (11.9k points)
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Think of 'a' as being red t-shirts. so you have 7 red t-shirts and you are adding 1 more red t-shirt, therefore you have a total of 8 red t-shirts. so 7a + a = 8a.

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