5)
9. 9а(За – 5b) -12а* (За – 5b)
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Step-by-step explanation:
9a+3a-5b-36a+60b
9a+3a-36a-5b+60b
12a-36a-5b+60b
-24a-55b
hope this helps is so then please make me brainalist
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