Câu hỏi của Kim Taehyung

Question

tính hợp lí a,-(3\10-6\11)-(21\30-5\11)b,(13\5+7\16)-(11\16-12\10)giiups mk với

_Nhạt_ · Accepted Answer

$a)-\left(\frac{3}{10}-\frac{6}{11}\right)-\left(\frac{21}{30}-\frac{5}{11}\right)$$=-\frac{3}{10}+\frac{6}{11}-\frac{21}{30}+\frac{5}{11}$$=\left(-\frac{3}{10}-\frac{21}{30}\right)+\left(\frac{6}{11}+\frac{5}{11}\right)$$=-1+1$$=0$$b)\left(\frac{13}{5}+\frac{7}{16}\right)-\left(\frac{11}{16}-\frac{12}{10}\right)$$=\frac{13}{5}+\frac{7}{16}-\frac{11}{16}+\frac{12}{10}$$=\left(\frac{13}{5}+\frac{12}{10}\right)+\left(\frac{7}{16}-\frac{11}{16}\right)$$=\frac{19}{5}+\left(-\frac{1}{4}\right)$$=\frac{71}{20}$Câu trả lời: $a)-\left(\frac{3}{10}-\frac{6}{11}\right)-\left(\frac{21}{30}-\frac{5}{11}\right)$$=-\frac{3}{10}+\frac{6}{11}-\frac{21}{30}+\frac{5}{11}$$=\left(-\frac{3}{10}-\frac{21}{30}\right)+\left(\frac{6}{11}+\frac{5}{11}\right)$$=-1+1$$=0$$b)\left(\frac{13}{5}+\frac{7}{16}\right)-\left(\frac{11}{16}-\frac{12}{10}\right)$$=\frac{13}{5}+\frac{7}{16}-\frac{11}{16}+\frac{12}{10}$$=\left(\frac{13}{5}+\frac{12}{10}\right)+\left(\frac{7}{16}-\frac{11}{16}\right)$$=\frac{19}{5}+\left(-\frac{1}{4}\right)$$=\frac{71}{20}$

Tetsuya Kuroko · Answer

a) $-\left(\frac{3}{10}-\frac{6}{11}\right)-\left(\frac{21}{30}-\frac{5}{11}\right)$$=\frac{-3}{10}+\frac{6}{11}-\frac{21}{30}+\frac{5}{11}$ $=\left(\frac{-3}{10}-\frac{21}{30}\right)+\left(\frac{6}{11}+\frac{5}{11}\right)$$=\left(\frac{-9}{30}-\frac{21}{30}\right)+1$$=-1+1$= 0b) $\left(\frac{13}{5}+\frac{7}{16}\right)-\left(\frac{11}{16}-\frac{12}{10}\right)$$=\frac{13}{5}+\frac{7}{16}-\frac{11}{16}+\frac{12}{10}$$=\left(\frac{13}{5}+\frac{12}{10}\right)+\left(\frac{7}{16}-\frac{11}{16}\right)$$=\left(\frac{26}{10}+\frac{12}{10}\right)-4$= $\frac{19}{5}-4$= $\frac{-1}{5}$Câu trả lời: a) $-\left(\frac{3}{10}-\frac{6}{11}\right)-\left(\frac{21}{30}-\frac{5}{11}\right)$$=\frac{-3}{10}+\frac{6}{11}-\frac{21}{30}+\frac{5}{11}$ $=\left(\frac{-3}{10}-\frac{21}{30}\right)+\left(\frac{6}{11}+\frac{5}{11}\right)$$=\left(\frac{-9}{30}-\frac{21}{30}\right)+1$$=-1+1$= 0b) $\left(\frac{13}{5}+\frac{7}{16}\right)-\left(\frac{11}{16}-\frac{12}{10}\right)$$=\frac{13}{5}+\frac{7}{16}-\frac{11}{16}+\frac{12}{10}$$=\left(\frac{13}{5}+\frac{12}{10}\right)+\left(\frac{7}{16}-\frac{11}{16}\right)$$=\left(\frac{26}{10}+\frac{12}{10}\right)-4$= $\frac{19}{5}-4$= $\frac{-1}{5}$

trần quốc dũng · Answer

a) $-\left(\frac{3}{10}-\frac{6}{11}\right)-\left(\frac{21}{30}-\frac{5}{11}\right)$$=\frac{-3}{10}+\frac{6}{11}-\frac{21}{30}+\frac{5}{11}$$=\frac{-3}{10}+\frac{6}{11}-\frac{7}{10}+\frac{5}{11}$$=\left(\frac{-3}{10}-\frac{7}{10}\right)+\left(\frac{6}{11}+\frac{5}{11}\right)$$=-1+1$$=0$b) $\left(\frac{13}{5}+\frac{7}{16}\right)-\left(\frac{11}{16}-\frac{12}{10}\right)$$=\frac{13}{5}+\frac{7}{16}-\frac{11}{16}+\frac{12}{10}$$=\frac{13}{5}+\frac{7}{16}-\frac{11}{16}+\frac{6}{5}$$=\left(\frac{13}{5}+\frac{6}{5}\right)+\left(\frac{7}{16}-\frac{11}{16}\right)$$=\frac{19}{5}+\frac{-1}{4}$$=\frac{76}{20}+\frac{-5}{20}$$=\frac{71}{20}$Câu trả lời: a) $-\left(\frac{3}{10}-\frac{6}{11}\right)-\left(\frac{21}{30}-\frac{5}{11}\right)$$=\frac{-3}{10}+\frac{6}{11}-\frac{21}{30}+\frac{5}{11}$$=\frac{-3}{10}+\frac{6}{11}-\frac{7}{10}+\frac{5}{11}$$=\left(\frac{-3}{10}-\frac{7}{10}\right)+\left(\frac{6}{11}+\frac{5}{11}\right)$$=-1+1$$=0$b) $\left(\frac{13}{5}+\frac{7}{16}\right)-\left(\frac{11}{16}-\frac{12}{10}\right)$$=\frac{13}{5}+\frac{7}{16}-\frac{11}{16}+\frac{12}{10}$$=\frac{13}{5}+\frac{7}{16}-\frac{11}{16}+\frac{6}{5}$$=\left(\frac{13}{5}+\frac{6}{5}\right)+\left(\frac{7}{16}-\frac{11}{16}\right)$$=\frac{19}{5}+\frac{-1}{4}$$=\frac{76}{20}+\frac{-5}{20}$$=\frac{71}{20}$

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