`-3/4`+`1/6`+`-7/8`
`-2/3`+`-1/3`:0,2+25%
`-3/4`.`7/8`+1`1/2`+`-3/4`:`8/9`
A = `4/6.10`+`6/10.16`+`1/16.3`+`1/24.7`+`1/28.5`
`-3/4`+`1/6`+`-7/8`
`-2/3`+`-1/3`:0,2+25%
`-3/4`.`7/8`+1`1/2`+`-3/4`:`8/9`
A = `4/6.10`+`6/10.16`+`1/16.3`+`1/24.7`+`1/28.5`
$\frac{-3}{4}$ +$\frac{1}{6}$ +$\frac{-7}{8}$
=$\frac{-18}{24}$+ $\frac{4}{24}$+ $\frac{-21}{24}$
=$\frac{-18+4+-21}{24}$
=$\frac{-35}{24}$
$\frac{-2}{3}$ +$\frac{-1}{3}$ :0,2×25%
=$\frac{-2}{3}$ +$\frac{-1}{3}$ : $\frac{1}{5}$ x $\frac{1}{4}$
=$\frac{-2}{3}$ +$\frac{-5}{3}$ x $\frac{1}{4}$
=$\frac{-2}{3}$+$\frac{-5}{12}$
=$\frac{-13}{12}$
-3/4.7/8+1 1/2+-3/4:8/9
=$\frac{-21}{32}$ +1$\frac{1}{2}$+$\frac{-27}{32}$
=($\frac{-21}{32}$ +$\frac{-27}{32}$ )+1$\frac{1}{2}$
=$\frac{-3}{2}$ +1$\frac{1}{2}$
=$\frac{-3}{2}$ +$\frac{3}{2}$
=0
Đáp án:
Giải thích các bước giải:
−34 +16 +−78
=−1824+ 424+ −2124
=−18+4+−2124
=−3524
−23 +−13 :0,2×25%
=−23 +−13 : 15 x 14
=−23 +−53 x 14
=−23+−512
=−1312
-3/4.7/8+1 1/2+-3/4:8/9
=−2132 +112+−2732
=(−2132 +−2732 )+112
=−32 +112
=−32 +32
=0
xin vote