hasil dari garis bilangan 4+(-7)=

4 + (-7) = 4 - 7 = -3

.................(-3)
...........<----------|
..........................(-7)
...........<---------------------------|
..................................4
...........................|-------------->
<--•---•---•---•---•---•---•---•---•---•---•--->
..-4..-3..-2.-1....0...1....2...3...4...5...6