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kow [346]
3 years ago
11

Expressions equivalent to 3a+9a+7b-bPLS HELP DUE TONIGHT

Mathematics
2 answers:
miskamm [114]3 years ago
7 0

Answer:

12a + 6b

Step-by-step explanation:

Combine like terms

12a+7b-b

Combine like terms

12a+6b

Hence, 12a+6b = 3a+9a+7b-b

[RevyBreeze]

Vlad1618 [11]3 years ago
7 0
ANSWER: ⇒ 12a + 6b

Simplify or expand:

3a + 9a + 7b - b

Reorder and gather like terms:

(3a + 9a) + (7b - b)

Collect coefficients of like terms:

(3 + 9) × a + (7 - 1) × b

Calculate the sum or difference:

12a + (7 - 1) × b

Calculate the sum or difference:

12a + 6b
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