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2个回答
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(7.15÷2.5)×10.1-2.86
=2.86x10.1-2.86
=2.86x(10.+0.1)-2.86
=2.86x10+2.86x0.1-(3-0.14)
=28.6+0.286-3+0.14
=28.6-3+0.286+0.14
=25.6+0.426
=26.026
谢谢,请采纳
=2.86x10.1-2.86
=2.86x(10.+0.1)-2.86
=2.86x10+2.86x0.1-(3-0.14)
=28.6+0.286-3+0.14
=28.6-3+0.286+0.14
=25.6+0.426
=26.026
谢谢,请采纳
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