On my math homework there are problems that confuse me... 1) -[21 + (-7)] = ( -9 +11) = Help!!!!!!!
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Are these two different problems? -[21 + (-7)] = -[21 -7] = -[14] = -14 = -14 (-9 +11) = -9 +11 = 11 - 9 = 2 = 2
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