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Mathematics
Amaya Novak
9 February, 12:36
7 (3a-2b) + 5b-3 (4a+2)
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Dereon
9 February, 13:04
0
Answer: 9a-9b-6
7 (3a-2b) + 5b-3 (4a+2)
Distribute:
7 (3a-2b) + 5b-3 (4a+2)
= (7) (3a) + (7) (-2b) + 5b + (-3) (4a) + (-3) (2)
=21a+-14b+5b+-12a+-6
Combine Like Terms:
=21a+-14b+5b+-12a+-6
= (21a+-12a) + (-14b+5b) + (-6)
=9a+-9b+-6
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