Answer:5a -3b + 12c
Step-by-step explanation:
<em><u>Question: </u></em>
(2a - 3b + 5c) - (-3a - 7c)
<em><u>First step:</u></em>
Distribute negitive sign
(2a - 3b + 5c) + (3a + 7c)
<em><u>Second Step:</u></em>
Remove parenthesis
2a - 3b + 5c + 3a + 7c
<em><u>Third Step:</u></em>
Add like terms
<u><em>Final Answer:</em></u>
5a -3b + 12c
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