Question

Help. This is a mathswatch question wich I do not get.

Answer 1

Answer: 3

1. Replace values (from letters to numbers):

Z + X * Y =

`2(4)/(5) + (3)/(5) * (1)/(3)`

2. Change
`2(4)/(5)`, into improper fraction (by multiplying number before fraction by denominator and adding value of numerator, and that’s how we get numerator in improper form, and denominator stays the same):

`image`

3. Do multiplication (because multiplication is before addition in pemdas, etc.):


`image`

4. Get fractions to same denominator (by multiplying one or two numbers, by number, which gives value of denominator of bigger number):


`image`. So the value of expression is equal to 3.

Hope this helps!