Verify {7-+-7)}×7=6×7-(-7)×7=
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Verify
{7-+-7)}×7=6×7-(-7)×7
= (7 - 7) x 7 = (6 x7) - {(-7) x 7}
= (0) x 7 = 42 - (-49)
= 0 = 42 + 49
= 0 = 91
{7-+-7)}×7=6×7-(-7)×7
= (7 - 7) x 7 = (6 x7) - {(-7) x 7}
= (0) x 7 = 42 - (-49)
= 0 = 42 + 49
= 0 = 91
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