Pre-AlgebraMedium SharePre-Algebra · Medium problemCombine like terms: 8m−3n−m+n8m - 3n - m + n8m−3n−m+n.A7m−2n7m - 2n7m−2nB14m−2n14m - 2n14m−2nC7m−3n7m - 3n7m−3nD7m+2n7m + 2n7m+2nCheck Show answer Walk through it step by step Practice more like this