Question

(1/4 + -5/13 ) + ( 2/11 + -8/13 + 3/4 )

phá ngoặc nhaa

Answer 1

`(1/4 + -5/13 ) + ( 2/11 +( -8/13) + 3/4 )`

`= 1/4 + -5/13 + 2/11 +( -8/13) + 3/4`

`=(1/4+3/4) + ( (-5)/13 + (-8)/13) + 2/11`

`= 1 + (-1)+2/11`

`=0+2/11`

`=2/11`

Answer 2

`(1/4+(-5)/13)+(2/11+(-8)/13+3/4)`

`=1/4+(-5)/13+2/11+(-8)/13+3/4`

`=(1/4+3/4)+( (-5)/13 + (-8)/13 ) + 2/11`

`= 1 + (-1) +2/11`

`= 0+2/11`

`=2/11`

Answer 3

`(1/4 + -5/13 ) + ( 2/11 + -8/13 + 3/4 )`

`=1/4  -5/13  + 2/11  -8/13 + 3/4`

`=(1/4 +3/4) + 2/11 + (-5/13 -8/13)`

`= 1 +2/11 -1`

`=2/11`

Answer 4

`(1/4 + (-5)/13 ) + ( 2/11 + (-8)/13 + 3/4 )`

`= 1/4 + (-5)/13 + 2/11 + (-8)/13 + 3/4 `

`= 2/11 + ((-8)/13 +  (-5)/13) +(1/4 + 3/4 )`

`= 2/11 + (-1) + 1`

`= 2/11 + 0 `

`= 2/11`

Answer 5

\(\left(\dfrac{1}{4}+\dfrac{-5}{13}\right)+\left(\dfrac{2}{11}+\dfrac{-8}{13}+\dfrac{3}{4}\right)\)

\(=\dfrac{1}{4}+\dfrac{-5}{13}+\dfrac{2}{11}+\dfrac{-8}{13}+\dfrac{3}{4}\)

\(=\left(\dfrac{1}{4}+\dfrac{3}{4}\right)+\left(\dfrac{-5}{13}+\dfrac{-8}{13}\right)+\dfrac{2}{11}\)

\(=1+\left(-1\right)+\dfrac{2}{11}\)

\(=0+\dfrac{2}{11}\)

\(=\dfrac{2}{11}\)