To combine integers with different signs find their _ _ then _ the smaller absolute value from the larger one give the sum the sign of the number with the _ absolute

Step-by-step explanation:

To combine integers with different signs find their absolute values then subtract the smaller absolute value from the larger one. Give the sum the sign of the number with the largest absolute value.

go on the tube you might find some information there

the first one, all those points on the line just make a strait line.