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yawa3891 [41]
3 years ago
7

From 4a + 7b - 12c subtract 8a - 9b + 12d.

Mathematics
1 answer:
topjm [15]3 years ago
7 0
4a+7b-12c-8a-9b+12d
Now you have to combine like terms, so a and a, B and B etc.
4a-8a=-4a
7b-9b=-2b
No more like term
-4a-2b-12c+12d
Have a nice day
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