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4.3×7.6-0.57×43
=4.3x7.6-5.7x4.3
=4.3x(7.6-5.7)
=4.3x1.9
=4.3x(2-0.1)
=4.3x2-4.3x0.1
=8.6-0.43
=8.17
=4.3x7.6-5.7x4.3
=4.3x(7.6-5.7)
=4.3x1.9
=4.3x(2-0.1)
=4.3x2-4.3x0.1
=8.6-0.43
=8.17
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