
1972×37+197.2×1.9-986×70.38怎么简算?
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1972×37+197.2×1.9-986×70.38
=1972ⅹ37+1972ⅹ0.19-986ⅹ2x35.19
=1972x(37+0.19)-1972x35.19
=1972x(37.19-35.19)
=1972x2
=2x(2000-28)
=4000-56
=3944
=1972ⅹ37+1972ⅹ0.19-986ⅹ2x35.19
=1972x(37+0.19)-1972x35.19
=1972x(37.19-35.19)
=1972x2
=2x(2000-28)
=4000-56
=3944
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