Question

Does anyone know how to do numbers 5,6,&7 please

Answer 1

5. 
`(2)/(8)`

6.
`(10)/(12)`

7.
`(11)/(20)`

Explanation:

5.
`(1)/(2) - ((1)/(8) +(1)/(8) )\\` =
`(2)/(8)`

Step 1: Solve for the fractions in the parentheses.

`(1)/(8) +(1)/(8)`

This will be easy because they both have the same denominator.

=
`(2)/(8)`

Now we have:

`(1)/(2) -(2)/(8)` =

Find the common denominator and change the numerator accordingly:

`(4)/(8) -(2)/(8) = (2)/(8)`

6.
`(3)/(4) +((1)/(4) -(1)/(6) )`

Step 1: Solve for the fractions inside the parentheses

Find the Common Denominator of both and change the numerators accordingly

`(1)/(4) -(1)/(6) = (3)/(12) -(2)/(12)`

Then just subtract them

`(1)/(12)`

Now we have:

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

Find the common denominator:

`(9)/(12) + (1)/(12)`

Then just add them

`(10)/(12)`

7.
`((1)/(2) +(3)/(20) )-(2)/(20)`

Step 1: Solve the fractions in the parentheses

`(1)/(2) +(3)/(20) =(10)/(20) +(3)/(20)`

Then solve

`(10)/(20) +(3)/(20) =(13)/(20)`

Now we have

`(13)/(20) -(2)/(20)`

Subtract

=
`(11)/(20)`

Answer 2

Make a common denominator for each of them. Then solve