Question

9 over 10 plus - four over five

Answer 1

`(1)/(10)`

Explanation:

`(9)/(10) + ( -(4)/(5) )`

change the fraction
`( -(4)/(5) )` to
`( -(8)/(10) )`

I multiplied both the denominator and numerator by 2

`(9)/(10) + ( -(8)/(10) )`

simplify the negative

`(9)/(10) -(8)/(10)`

subtract the numerator not the denominator

`(1)/(10)`

Answer 2

Answer: 1 and 7 over 10

Explanation: