题目内容
138×1
+23.3×(2-75%)-125%×38+(1+0.25)×28.7.
| 1 |
| 4 |
138×1
+23.3×(2-75%)-125%×38+(1+0.25)×28.7,
=138×1.25+23.3×1.25-1.25×38+1.25×28.7,
=1.25×(138+23.3-38+28.7),
=1.25×(100+52),
=1.25×100+1.25×4×13,
=125+65,
=190.
| 1 |
| 4 |
=138×1.25+23.3×1.25-1.25×38+1.25×28.7,
=1.25×(138+23.3-38+28.7),
=1.25×(100+52),
=1.25×100+1.25×4×13,
=125+65,
=190.
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