Câu 1. (4,0 điểm) Thực hiện phép tính a) $\frac{5}{6}$.$\frac{1}{2}$ - $\frac{1}{12}$ b) $\frac{1}{3}$ + $\frac{2}{5}$ c) $\frac{7}{3}$ + $\frac{2}{3}$ - $\frac{5}{3}$ d) $2^{3}$.$2^{4}$.$2^{2}$

`a . ` `5/6*1/2-1/12`

`=` `5/12-1/12`

`=` `(5-1)/12`

`=` `4/12`

`=` `1/3`

$\\$

`b . ` `1/3+2/5`

`=` `5/15+6/15`

`=` `(5+6)/15`

`=` `11/15`

$\\$

`c . ` `7/3+2/3-5/3`

`=` `3-5/3`

`=` `9/3-5/3`

`=` `(9-5)/3`

`=` `4/3`

$\\$

`d . ` `2^3*2^4*2^2`

`=` `2^(3+4+2)`

`=` `2^9`

`=` `512`

`#me`