Question

3/4+ 3/4+ 3/4+ 3/4=, 1/2+ 1/2+ 1/3+1/3+1/3=

Answer 1

\(a,=\dfrac{3+3+3+3}{4}=\dfrac{12}{4}=3\\ b,=\dfrac{1+1}{2}+\dfrac{1+1+1}{3}=\dfrac{2}{2}+\dfrac{3}{3}=1+1=2\)

Answer 2

`3/4 + 3/4 + 3/4 + 3/4`

`= (3+3+3+3)/4`

`=12/4`

`=3`

hoặc cách khác

`3/4 + 3/4 + 3/4 + 3/4`

`= 3/4 xx 4`

`=12/4`

`=3`

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`1/2 + 1/2 + 1/3 + 1/3 + 1/3`

`=(1+1)/2 + (1+1+1)/3`

`=2/2 + 3/3`

`=1+1`

`=2`

hoặc cách khác :

`1/2 + 1/2 + 1/3 + 1/3 + 1/3`

`=1/2 xx 2 + 1/3 xx 3`

`=2/2 + 3/3`

`=1+1`

`=2`