Tính giá trị của các biểu thức sau:
a) \(\frac{-5}{7}.\frac{2}{11}+\frac{-5}{7}.\frac{9}{11}+1\frac{5}{7}\)
b) \(\left( \frac{3}{8}+\frac{-1}{4}+\frac{5}{12} \right):\frac{2}{3}\)
c) \(25\% - 1\frac{1}{2} + 0,5.\frac{{12}}{5}\)
A.a) \(1\) b) \(\frac{13}{16}\)
c) \(\frac{-1}{20}\)
B.a) \(2\) b) \(\frac{1}{16}\)
c) \(\frac{-1}{20}\)
C.a) \(1\) b) \(\frac{3}{16}\)
c) \(\frac{-1}{2}\)
D.a) \(1\) b) \(\frac{5}{16}\)
c) \(\frac{-3}{20}\)
a) \(\frac{-5}{7}.\frac{2}{11}+\frac{-5}{7}.\frac{9}{11}+1\frac{5}{7}\)
b) \(\left( \frac{3}{8}+\frac{-1}{4}+\frac{5}{12} \right):\frac{2}{3}\)
c) \(25\% - 1\frac{1}{2} + 0,5.\frac{{12}}{5}\)
A.a) \(1\) b) \(\frac{13}{16}\)
c) \(\frac{-1}{20}\)
B.a) \(2\) b) \(\frac{1}{16}\)
c) \(\frac{-1}{20}\)
C.a) \(1\) b) \(\frac{3}{16}\)
c) \(\frac{-1}{2}\)
D.a) \(1\) b) \(\frac{5}{16}\)
c) \(\frac{-3}{20}\)
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Hóa Học lớp 12
