Solve for a
a=-6
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a-4-3a=8
Subtract 3a from both sides.
-2a-4=8
Combine a and -3a to get -2a.
-2a=8+4
Add 4 to both sides.
-2a=12
Add 8 and 4 to get 12.
a=\frac{12}{-2}
Divide both sides by -2.
a=-6
Divide 12 by -2 to get -6.
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