1.

5a - [6a - {9a-(10a-4a-3a)}]

Answer»

ANSWER:

5A

Step-by-step explanation:

5a[6A-{9A-(10a-7a)

=5a-[6a-{9a-3a}

=5a-[6a-6a]

=5a-0

=5a is the answer



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