Question

If x-1=0 and y+3=0, what is the value of x-y?​

Answer 1

4

Explanation:

x is 1

y is -3

1- - 3 is 1+3 which is 4

Answer 2

Answer:
`x - y = 4`

Explanation:

`x - 1 = 0`

Add 1 to both sides of the equation , that is

`x - 1 + 1 = 0 + 1`

`x = 1`

Also

`y + 3 = 0`

subtract 3 from both sides of the equation , that is

`y + 3 - 3 = 0 - 3`

`y = -3`

Therefore :

`x - y = 1 - (-3)`

`x - y = 1 + 3`

`x - y = 4`