4 - (-2) = +6
Because [tex]Four [/tex]became a negative
remember (neg = negative ; pos = positive)
[tex]neg. + neg. = pos.
[/tex]
[tex]pos. + pos. = pos.[/tex]
[tex]neg. + pos = neg.[/tex]
[tex]pos. + neg. =neg.[/tex]
Negatives goes on the [tex]LEFT [/tex]side of the number-line
Positives goes on the [tex]RIGHT [/tex]side of the number-line
