Answer:
2x±44
Explanation:
-2[x-7]=-2x±14 because negative ×negative=positive
±5[3x±6]=15x±30
-3[5x±10]=-15x±30
2x±14±15x-15x±30
2x±15x-15x=2x
14±30=44
2x±44=2x±44
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