Answer:
3f -9g +7
Explanation:
(–3f – 4g + 9) – (2 – 6f + 5g)
Distribute the minus sign
(–3f – 4g + 9) – 2 + 6f - 5g
I like to line them up vertically
–3f – 4g + 9
+ 6f - 5g -2
------------------------
15f - 19g + 3
(-3f - 4g + 9) - 3 • (-6f + 5g + 2)
=15f+19g
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