You can put this solution on YOUR website! To subtract, we have to apply distributive property to get
-6a+2b-c+5b-8c+7d
combine like terms to get
-6a+7b-9c + 7d
You can put this solution on YOUR website! subtract
(-6a+2b-c)-(-5b+8c-7d)
= -6a + 2b -c + 5b - 8c + 7d
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= -6a -7b -9c + 7d
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Cheers,
Stan H.