Question

I don’t know how to solve this can someone help me please

Answer 1

`-9(7)/(15)`

Explanation:

It helps to change the denominators to be common.

times the 4/5 by 3/3 so you get 12/15

times the 2/3 by 5/5 so you get 10/15

new equation would become
`-3(12)/(15) -5(10)/(15)`

then it becomes easier to subtract, but when both fractions are negative I like to add them as if they were both positive and change the sign at the end.

`3(12)/(15) +5(10)/(15)\\3+5 = 8\\(12)/(15) + (10)/(15) = (22)/(15) = 1(7)/(15) \\\\8 + 1(7)/(15) = 9(7)/(15)`

then just flip the sign back over:
`-9(7)/(15)`

Hope my thinking isn't too complicated.

Answer 2

-9
`(7)/(15)`

Explanation:

-3
`(4)/(5)` - 5
`(2)/(3)` The common denominator would be 15

-3
`(12)/(15)` - 5
`(10)/(12)` multiply the first fraction by 3/3 and the second fraction by 5/5 to get the equivalent fractions. Now add

-8
`(22)/(15)` I can rewrite as
`(22)/(15)` =
`(15)/(15)` +
`(7)/(15)` and
`(15)/(15)` = 1

-9
`(7)/(15)`

Helping in the name of Jesus.