-3(2a-4)
Factor 2 out of 2a-4.
Factor 2 out of 2a.
-3(2(a)-4)
Factor 2 out of -4.
-3(2a+2⋅-2)
Factor 2 out of 2a+2⋅-2.
-3(2(a-2))
-3(2(a-2))
Remove unnecessary parentheses.
-3⋅2(a-2)
-3⋅2(a-2)
Multiply -3 by 2.
-6(a-2)
Factor -3(2a-4)
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