Verified Answer :

Reennaa

It is D hope that helps

deadlykittenxo

(-7a - 19c) - (-12a + 30c) - (-21a - 11c)
Rewrite with understood 1's:
1(-7a - 19c) - 1(-12a + 30c) - 1(-21a - 11c)
Distribute 1's to the terms:
-7a - 19c + 12a - 30c + 21a + 11c
Combine like terms.
26a - 38c 

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