7/12 - 6/36 =
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a) bằng 79/180
b)bằng 25/72 nha
k cho Jico nha

a: \(=\dfrac{-5}{8}+\dfrac{7}{12}=\dfrac{-15}{24}+\dfrac{14}{24}=\dfrac{-1}{24}\)
b: \(=\dfrac{3}{4}-\dfrac{5}{6}+\dfrac{11}{12}=\dfrac{9}{12}-\dfrac{10}{12}+\dfrac{11}{12}=\dfrac{10}{12}=\dfrac{5}{6}\)
c: \(=\dfrac{6}{36}-\dfrac{1}{36}=\dfrac{5}{36}\)
d: \(=\dfrac{5}{12}+\dfrac{5}{12}=\dfrac{10}{12}=\dfrac{5}{6}\)
e: \(=\dfrac{-8}{56}-\dfrac{7}{56}=\dfrac{-15}{56}\)
f: \(=\dfrac{-5}{15}+\dfrac{3}{25}=\dfrac{-25}{75}+\dfrac{9}{75}=\dfrac{-16}{75}\)

A = \(\frac{7}{12}\)+\(\frac{5}{12}\): 6 - \(\frac{11}{36}\)
A = \(\frac{7}{12}\)+\(\frac{5}{72}\)- \(\frac{11}{36}\)
A = \(\frac{47}{72}\)- \(\frac{11}{36}\)
A = \(\frac{25}{72}\)

\(\frac{7}{12}+\frac{5}{12}:6-\frac{11}{36}=1:\left(\frac{216}{6}-\frac{11}{6}\right)\)\(1:\frac{205}{16}=\frac{16}{205}\)

1: =7/6:(-21/5)-25*0,2
=-7/6*5/21-5
=-35/126-5
=-5/21-5
=-5/21-105/21=-110/21
3: \(=\dfrac{7}{12}+\dfrac{5}{72}-\dfrac{11}{36}=\dfrac{42+5-22}{72}=\dfrac{25}{72}\)
\(\frac{7}{12}-\frac{6}{36}=\frac{7}{12}-\frac{2}{12}=\frac{7-2}{12}=\frac{5}{12}\)
= \(\frac{5}{12}\)