如题所述
原式=2.5x35-(2.5x3.06+2.5x0.94)
=2.5x35-2.5x(3.06+0.94)
=2.5x35-2.5x4
=2.5x31
=77.5
=2.5x35-2.5x(3.06+0.94)
=2.5x35-2.5x4
=2.5x31
=77.5
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第1个回答 2011-06-22
87.5-2.5×3.06-2.35
=87.5-7.65-2.35
=77.5
=87.5-7.65-2.35
=77.5
第2个回答 2011-06-29
原式=3x25+5x2.5--2.5x3.06-2.35
=2.5x35-(2.5x3.06+2.5x0.94)
=2.5x35-2.5x(3.06+0.94)
=2.5x35-2.5x4
=2.5x31
=77.5
=2.5x35-(2.5x3.06+2.5x0.94)
=2.5x35-2.5x(3.06+0.94)
=2.5x35-2.5x4
=2.5x31
=77.5
