(-2) ³ . { 3/4 – 0,25 } : { 9/4 -7/6} lm giúp 15/08/2021 Bởi Ruby (-2) ³ . { 3/4 – 0,25 } : { 9/4 -7/6} lm giúp
(-2) ³ . { `3/4` – 0,25 } : { `9/4` -`7/6`} = (-8) . { `3/4` – `1/4`} : {`54/24`-`28/24`} = (-8) . `4/4` : `13/12` = (-8) . 1 : `13/12` = (-8) : `13/12` = (-8) . `12/13` =`-96/13` Bình luận
(-2)^3 . { 3/4 – 0,25 } : { 9/4 -7/6}=-8.(3/4-1/4): 13/12=-4:13/12=-48/13
(-2) ³ . { `3/4` – 0,25 } : { `9/4` -`7/6`}
= (-8) . { `3/4` – `1/4`} : {`54/24`-`28/24`}
= (-8) . `4/4` : `13/12`
= (-8) . 1 : `13/12`
= (-8) : `13/12`
= (-8) . `12/13`
=`-96/13`