The average score of Xiaoming's three subjects of language, mathematics and English at the end of the term is 87, and the scores of the three subjects are different integers. What is the minimum score for Xiao Ming's math test?
小明期末语、数、英三科的平均分是87分，且三科的分数是各不相同的整数．小明的数学至少考多少分．
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