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What mistake was made in this equation 3x plus 7 equals -4x plus 28 -x plus 7 equals 28 -x equals 21 x equals -21?
Wiki User
∙ 10y ago
3x + 7 = -4x + 28 implies 7x + 7 = 28
Wiki User
∙ 10y ago
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A mistake
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A mistake
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