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一、忘记改变不等号的方向例1解不等式3(x-1)≤4x+10.错解:去括号,得3x-3≤4x+10.移项合并同类项,得-x≤13.
First, forget to change the direction of inequality Example 1 solution inequality 3 (x-1) ≤ 4x +10. The wrong solution: to the brackets, 3x-3 ≤ 4x +10. Shift merge the same terms, was-x ≤ 13.