Question

Answer 1

số 0 tròn trĩnh

Answer 2

\(=\dfrac{1}{12}+\dfrac{8}{12}-\dfrac{9}{12}=0\)

Answer 3

\(=\dfrac{1}{12}+\dfrac{8}{12}-\dfrac{9}{12}=\dfrac{1+8-9}{12}=0\)

Answer 4

\(\dfrac{1}{12}+\dfrac{2}{3}-\dfrac{3}{4}=\dfrac{1}{12}+\dfrac{8}{12}-\dfrac{9}{12}=\dfrac{1+8-9}{12}=\dfrac{0}{12}=0\)

Answer 5

\(​​​​\dfrac{1}{12}+​​​​\dfrac{2}{3}+​​​-\dfrac{3}{4}\)=\(​​​​\dfrac{1}{12}+​​​​\dfrac{8}{12}-​​​​\dfrac{9}{12}\)=\(0\)

Answer 6

=1/12+8/12−9/12=0