Ответ:
1)-2(1-x-3y)
-2-2(-x)-2(3y)
-2+2x-2(3y)
-2+2x+6y
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Ответ:
1)-2(1-x-3y)
-2-2(-x)-2(3y)
-2+2x-2(3y)
-2+2x+6y