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Vesna [10]
2 years ago
9

Which is an equivalent expression for 21a+35?

Mathematics
1 answer:
ki77a [65]2 years ago
5 0

Answer:

7(3a + 5)

Step-by-step explanation:

Rewrite 21 as 7 · 3

Rewrite 35 as  7 · 5

Therefore,

⇒ 21a + 35 = 7 · 3a + 7 · 5

Factor out common term 7:

⇒ 7 · 3a + 7 · 5 = 7(3a + 5)

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