Bài 1 : Tính
1) frac{4}{7}-frac{1}{14}+left|frac{-5}{21}right|
2) left|frac{-2}{3}right|-frac{1}{2}+3
3) left|frac{7}{-4}right|-frac{5}{8}+frac{-2}{3}
4) frac{4}{5}+left|frac{-3}{2}right|+frac{1}{-4}
5) left|frac{-1}{4}right|-3+frac{3}{4}
6) left|frac{-1}{3}right|-frac{5}{4}+frac{1}{5}
Bài 2 : Tìm x, biết :
1) x-left|1frac{1}{6}right|frac{5}{21}
2) x+left|-1frac{2}{3}right|left|-frac{3}{4}right|
3) left|x-frac{1}{3}right|frac{5}{2}
4) left|x+frac{2}{3}right|0
5) left|x+2right|frac{1...
Đọc tiếp
Bài 1 : Tính
1) \(\frac{4}{7}-\frac{1}{14}+\left|\frac{-5}{21}\right|\)
2) \(\left|\frac{-2}{3}\right|-\frac{1}{2}+3\)
3) \(\left|\frac{7}{-4}\right|-\frac{5}{8}+\frac{-2}{3}\)
4) \(\frac{4}{5}+\left|\frac{-3}{2}\right|+\frac{1}{-4}\)
5) \(\left|\frac{-1}{4}\right|-3+\frac{3}{4}\)
6) \(\left|\frac{-1}{3}\right|-\frac{5}{4}+\frac{1}{5}\)
Bài 2 : Tìm x, biết :
1) \(x-\left|1\frac{1}{6}\right|=\frac{5}{21}\)
2) \(x+\left|-1\frac{2}{3}\right|=\left|-\frac{3}{4}\right|\)
3) \(\left|x-\frac{1}{3}\right|=\frac{5}{2}\)
4) \(\left|x+\frac{2}{3}\right|=0\)
5) \(\left|x+2\right|=\frac{1}{3}-\frac{1}{5}\)
6) \(\left|x-4\right|=\frac{1}{5}-\left(\frac{1}{2}-\frac{5}{4}\right)\)
7) \(\left|x-\frac{5}{4}\right|=-\frac{1}{3}\)
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