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请问158*23/157怎么算33*69/162+69乘129/162简算
题目详情
请问158*23/157怎么算
33*69/162+69乘129/162简算
33*69/162+69乘129/162简算
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答案和解析
158*23/157
= (157+1)*23/157
= 157*23/157 + 23/157
= 23 + 23/157
= 23又 23/157
33*69/162 + 69*129 / 162
= 69/162 * (33+129)
= 69/162 * 162
= 69
= (157+1)*23/157
= 157*23/157 + 23/157
= 23 + 23/157
= 23又 23/157
33*69/162 + 69*129 / 162
= 69/162 * (33+129)
= 69/162 * 162
= 69
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