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数学
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若-3x+2y=-3,则9+6x-4y的值是______.
人气:190 ℃ 时间:2020-06-26 06:46:19
解答
若-3x+2y=-3,
9+6x-4y,
=9-(-6x+4y),
=9-2(-3x+2y),
=9-2×(-3),
=15.
故答案为:15.
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