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a) \(\dfrac{2}{3}+\dfrac{3}{5}=\dfrac{10}{15}+\dfrac{9}{15}=\dfrac{19}{15}\)
a) \(\dfrac{7}{12}-\dfrac{2}{7}+\dfrac{1}{12}=\dfrac{2}{3}-\dfrac{2}{7}=\dfrac{14}{21}-\dfrac{6}{21}=\dfrac{8}{21}\)
a) \(\frac{5}{6}< \frac{6}{7}\)
b) \(\frac{5}{8}=\frac{50}{80}\)
c) \(\frac{3}{4}>\frac{5}{7}\)
d) \(\frac{9}{7}< \frac{8}{5}\)
a, 6/9+5/7+1/3=2/3+5/7+1/3=5/7+1=12/7
b, 17/7+6/5-20/14=17/7+6/5-10/7=6/5+1=11/5
c,2/5x1/4+3/4x2/5=2/5x(1/4+3/4)=2/5x1=2/5
d, 6/11:4/6+5/11:2/3=6/11:2/3+5/11:2/3=(6/11+5/11):2/3=3/2
nha
1.
a) 889972 + 96306 = 986278
b) 726,83 - 349,67 = 377,16
c) \(\frac{7}{8}+\frac{3}{4}=\frac{13}{8}\)
d)\(2-\frac{5}{6}=\frac{7}{6}\)
a) 889972 + 96308 = 986280
b) \(\dfrac{5}{6}+\dfrac{7}{12}=\dfrac{10}{12}+\dfrac{7}{12}=\dfrac{17}{12}\)
c) \(3+\dfrac{5}{7}=\dfrac{21}{7}+\dfrac{5}{7}=\dfrac{26}{7}\)
d) 926,83 + 549,67 = 1476,5
a)889972 + 96308=986280
c)3+5/7=21/7+5/7=26/7
b)5/6+7/12=10/12+7/12=17/12
d)926,83+549,67=1476,5