-7 (7-x) = -7 (7x-1)

please help me because this is due tomorrow and i only have ten out of 20 problems done
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-7(7-x)=-7(7x-1) become +7*(x-7) = -7(7x-1) . . . or 7x-49=-49x+7 . . . 7x+49x=49+7 . . . 56x=56 . . . x=1
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