There are infinitely many answers:
1+1+1+1+... 120 times.
1+1+1+1+... 118 times +2
...
1+1+1+117
1+1+118
1+119
1+1+1+1+... 116 times +2+2
and so on
And then, there are the infinite number of fractions.
24 and 5
143
77
5 and -24
120
The numbers are: 20 and -6
143
draw a base and use this to draw an equilateral triangle each angle of an equilateral triangle adds up to 60 degrees. To have an angle of 120 degree use this angle and then draw another side of a triangle next to it to get a 120 degree angle.
149
139
-27
a straight line,as always, adds up to 180*