[1⼀3×(-2×3⼀2)]-{-[(-7⼀30)×5⼀3]×[-(-9⼀5)×(-5⼀3)]}

怎么算,要过程,可图片
2024-12-18 23:04:14
推荐回答(1个)
回答1:

〔1/3*(-2*3/2)〕-{-〔(-7/30)*5/3〕*〔-(-9/5)*(-5/3)〕}
=〔1/3*(-3)〕-{-〔-7/18〕*〔-3〕}
=〔-1〕-{-7/6}
=-1+7/6
=1/6