2/3+1/4-3/5 =19/60
2/3-1/4+3/5 =61/60
2/3 + 1/4 - 3/5 = 11/12 - 3/5 =19/60
2/3 - 1/4 + 3/5 = 5/12 + 3/5 = 61/60
k cho mk nha!
\(\frac{2}{3}+\frac{1}{4}-\frac{3}{5}=\frac{19}{60}\)
\(\frac{2}{3}-\frac{1}{4}+\frac{3}{5}=\frac{61}{60}\)
2/3 + 1/4 - 3/5
= 8/12 + 3/12 - 3/5
= 11/12 - 3/5
= 55/60 - 36/60
= 19/60
2/3 - 1/4 + 3/5
= 8/12 - 3/12 + 3/5
= 5/12 + 3/5
= 25/60 + 36/60
= 61/60
\(\frac{2}{3}+\frac{1}{4}-\frac{3}{5}\)
\(=\frac{40}{60}+\frac{15}{60}-\frac{36}{60}\)
\(=\frac{19}{60}\)
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\(\frac{2}{3}-\frac{1}{4}+\frac{3}{5}\)
\(=\frac{40}{60}-\frac{15}{60}+\frac{36}{60}\)
\(=\frac{61}{60}\)