Answer:
18j + 63 + 45j and 9(2j + 7) + 9(5j)
Explanation:
distributive property
9(2j + 7 + 5j)
9× 2j + 9×7 + 9 × 5j
18j + 63 + 45j
associative property
9(2j + 7) + 9(5j)
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