Hoàng Kim Ngân
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2024-10-07 13:38:26
A=\(\dfrac{5}{4}\)
B=\(\dfrac{64}{52}\)
2024-10-07 13:36:23
A=\(\dfrac{3}{5}\)
B=-12
C=0
D=-4
2024-10-07 13:35:13
P=\(\dfrac{1956}{1260}=\dfrac{163}{105}\)
Q=\(\dfrac{89-123-79}{20}=\dfrac{-113}{20}\)
2024-10-07 13:30:39
a)A=(\(\dfrac{1}{3}\)+\(\dfrac{2}{3}\))-(\(\dfrac{8}{15}+\dfrac{7}{15}\))+(\(\dfrac{-1}{7}+1\dfrac{1}{7}\))=1-1+1=1
b)B=(0,25-\(1\dfrac{1}{4}\))+(\(\dfrac{3}{5}+\dfrac{2}{5}\))-\(\dfrac{1}{8}\)=(\(\dfrac{1}{4}-1-\dfrac{1}{4}\))+1-\(\dfrac{1}{8}\)=\(\dfrac{-1}{8}\)
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