若-3x+2y=-3,
9+6x-4y,
=9-(-6x+4y),
=9-2(-3x+2y),
=9-2×(-3),
=15.
故答案為:15.
若-3x+2y=-3,則9+6x-4y的值是_.
若-3x+2y=-3,則9+6x-4y的值是______.
數(shù)學(xué)人氣:610 ℃時間:2020-06-26 06:46:19
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