Question

Select 3 expressions that have a sum or difference of 3 /4 .

A . 1/2 + 2/4

B . 11/12 − 1/6

C. 3/5 + 3/20

D . 7/8 − 1/2

E . 2/3 + 1/12

Answer 1

The Three expressions that have a sum or difference of 3 /4 .

B . 11/12 − 1/6

C. 3/5 + 3/20

E . 2/3 + 1/12

Explanation:

The Three expressions that have a sum or difference of 3 /4 .

are

B . 11/12 − 1/6

`(11)/(12)-(1)/(6)=(11)/(12)-(1* 2)/(6* 2)\\\\(11)/(12)-(1)/(6)=(11)/(12)-(2)/(12)=(11-2)/(12)=(9)/(12)=(3)/(4)`

Therefore,

`(11)/(12)-(1)/(6)=(3)/(4)`

C. 3/5 + 3/20

`(3)/(5)+(3)/(20)=(3* 4)/(5* 4)+(3)/(20)\\\\(3)/(5)+(3)/(20)=(12)/(20)+(3)/(20)=(15)/(20)=(3)/(4)`

Therefore,

`(3)/(5)+(3)/(20)=(3)/(4)`

E . 2/3 + 1/12

`(2)/(3)+(1)/(12)=(2* 4)/(3* 4)+(1)/(12)\\\\(3)/(5)+(3)/(20)=(8+1)/(12)=(9)/(12)=(3)/(4)`

Therefore,

`(2)/(3)+(1)/(12)=(3)/(4)`