3/4-[(-5/3)-(1/12+2/9)]
3/4-[(-5/3)-11/36]
3/4+71/36
49/18
\(\frac{3}{4}-\left[\left(-\frac{5}{3}\right)-\left(\frac{1}{12}+\frac{2}{9}\right)\right]\)
\(=\frac{3}{4}-\left[-\frac{5}{3}-\frac{11}{36}\right]\)
\(=\frac{3}{4}-\left(-\frac{71}{36}\right)=\frac{3}{4}+\frac{71}{36}\)
\(=\frac{49}{18}\)
\(\frac{3}{4}-\left[\left(\frac{-5}{3}\right)-\left(\frac{1}{12}+\frac{2}{9}\right)\right]\)
\(=\frac{3}{4}-\left[\frac{-5}{3}-\frac{1}{12}-\frac{2}{9}\right]\)
\(=\frac{3}{4}+\frac{5}{3}+\frac{1}{12}+\frac{2}{9}=\left(\frac{3}{4}+\frac{1}{12}\right)+\left(\frac{5}{3}+\frac{2}{9}\right)\)
\(=\frac{5}{6}+\frac{17}{9}=\frac{15}{18}+\frac{34}{18}=\frac{49}{18}\)
thank khảo bài làm trên này cậu nhá, học tốt nha ^^
\(=\frac{3}{4}-\left(\frac{-5}{3}-\frac{1}{12}-\frac{2}{9}\right)\)
\(=\frac{3}{4}-\left(\frac{\left(-5\right).12-3-2.4}{36}\right)\)
\(=\frac{3}{4}-\left(\frac{-60-3-8}{36}\right)\)
\(=\frac{3}{4}-\left(\frac{-71}{36}\right)\)
\(=\frac{3}{4}+\frac{71}{36}\)
\(=\frac{27}{36}+\frac{71}{36}\)
\(=\frac{98}{36}=\frac{49}{18}\)
3/4-[(-5/3)-(1/12+2/9)]
=3/4+5/3+1/12+2/9
=27/36+60/36+3/36+8/36
=98/36
=49/18
\(\frac{3}{4}-[\left(-\frac{5}{3}\right)-\left(\frac{1}{12}+\frac{2}{9}\right)]\)\(]\)
\(=\frac{3}{4}-\left(-\frac{5}{3}-\frac{1}{12}-\frac{2}{9}\right)\)
\(=\frac{3}{4}-\left(-\frac{60}{36}-\frac{3}{36}-\frac{8}{36}\right)\)
\(=\frac{3}{4}-\left(-\frac{71}{36}\right)\)
\(=\frac{49}{18}\)
\(KL:...............\)
tớ cảm ơn các cậu rất nhiều
