−18÷(−3)
−18÷(−3)
先简化,再求值:x−22x−6÷(−5x−3−x−3)
化简求值:(3x−1−x−1)÷x−2x
阅读下面解题过程:计算:(−15)÷(13−32−3)×6
计算:[10120+(3−0.85)÷56]
18×37+0.65×813−27×18+513÷1713
(2012•广陵区二模)先化简再求值:(3x−1−x−1)÷x−2x
−3
(1)化简求值:(x2−2x−3x2−1)÷x−3x−1;其中x=2
(1)−32x−4÷1x−2•x2−4x2+3x−2
(1)化简3a92a−3÷3a−7•3a13;
(2011•香坊区模拟)先化简再求代数式x−22x+2÷(x−1−3x+1)