【#GRE留學外語考試# #GRE數(shù)學重要知識點：Subtracting Monomials#】向著順利通過考試的目標，邁步向前，必然會成功拿到證書。以下是“GRE數(shù)學重要知識點：Subtracting Monomials”，歡迎閱讀參考！更多相關(guān)訊息請關(guān)注©無憂考網(wǎng)！

　　To subtract a monomial from another of the same variables just subtract the coefficients. Only two like monomials can be subtracted from each other.

　　Example:

　　By subtracting 3x from 4x, we get (4-3)x=x.

　　By subtracting 3xy from 2xy, we get (2-3)xy=-xy.

　　By subtracting bx from ax, we get ax-bx=(a-b)x.

　　Remember:

　　Monomials can be subtracted only if they have the same variables with identical powers.