5a+[-3b+4a-(5b-7a)+{9a-4b}]
Answers
Answered by
1
Answer:
25a-12b
Step-by-step explanation:
5a-3b+4a-5b+7a+9a-4b
5a+4a+7a+9a-3b-5b-4b
25a-12b
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