Answer
$6c^{5}+8c^{3}-1$
Work Step by Step
$(7c^{5}+5c^{3}-1)-(c^{5}-3c^{3})$
Combine like terms:
$7c^{5}-c^{5}=6c^{5}$
$5c^{3}-(-3c^{3})=8c^{3}$
$-1=-1$
$6c^{5}+8c^{3}-1$
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