Question

Evaluate the expression when a=


`(11 )/(15)`
and c=

`(3 )/(10)`
-2c+a
write your answer in simplest form ​

Answer 1

`(2)/(15)`

Explanation:

Substitute the values for a and c into the expression

- 2c + a

= - 2×
`(3)/(10)` +
`(11)/(15)`

= -
`(3)/(5)` +
`(11)/(15)`

= -
`(3(3))/(5(3))` +
`(11)/(15)`

= -
`(9)/(15)` +
`(11)/(15)`

=
`(2)/(15)`