emory238
04.09.2020 •
Mathematics
17 = a - 3 - За
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Ответ:
-10 = a
Step-by-step explanation:
17 = a - 3 - За
Combine like terms
17 = -3 -2a
Add 3 to each side
17+3 = -3-2a+3
20 = -2a
Divide by -2
20/-2 = -2a/-2
-10 = a
Ответ:
A.
Explanation: