Answer:
a = 1
Step-by-step explanation:
Original Equation:
-1 + 8 = 10 - 3a
Add 1 to both sides
8 = 11 - 3a
Subtract 11 from both sides
-3 = -3a
Divide both sides by -3
Hope this helps :)
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7 = 10 - 3a
-10 -10
---- -----
-3 -3
1 = a
