Question

Number 4 i need help no it’s due at 9:00

Answer 1

When we have a negative sign in front of a number, the sign of the number is changed, therefore if the number is negative the number will turn positive. This is done below:

`\begin{gathered} (-4)\text{ - (-5)} \\ (-4)\text{ + 5} \end{gathered}`

When we sum two numbers of different signs, we subtract their values and maintain the sign of the greatest one:

`-4\text{ + 5 = 1}`