Question

(8+2\(\dfrac{1}{3}\)-\(\dfrac{3}{5}\))-(5+0,4)-(3\(\dfrac{1}{2}\)-2)

 

Answer 1

`(8+2 1/3-3/5)-(5+0,4)-(3 1/2-2)`

`=(8+7/3-3/5)-5,4-(7/2-2)`

`=(31/3-3/5)-27/5-3/2`

`=146/15-27/5-3/2`

`=13/3-3/2=17/6`

Answer 2

`(8 + 2 1/3-3/5)-(5+0,4)-(3 1/2 -2)`

`=(8+7/3-3/5)-5,4-(7/2-2)`

`=(8/1+7/3-3/5)-27/5-(7/2-2/1)`

`=( (8xx3)/(1xx3)+7/3-3/5 )-27/5-(7/2-(2xx2)/(2xx1) )`

`=(24/3+7/3-3/5)-27/5-(7/2-4/2)`

`=( (24+7)/3 - 3/5)-27/5-( (7-4)/2 )`

`=( 31/3-3/5)-27/5-3/2`

`=( (31xx5)/(3xx5)-(3xx3)/(5xx5)-27/4-3/2`

`= (155/15 - 9/15)-27/5-3/2`

`=146/15-27/5-3/2`

`=146/15-(27xx3)/(5xx3)-3/2`

`=146/15-81/15-3/2`

`=(146-81)/15-3/2`

`=65/15-3/2`

`=(65:5)/(15:5)-3/2`

`=13/3-3/2`

`=(13xx2)/(3xx2)-(3xx3)/(2xx3)`

`=26/6-9/6`

`=(26-9)/6`

`=17/6`

`#Nguyet`