-20 to -14 is 6
-14 to -8 is 6
-8 to -2 is 6
aritmetic sequence
an=a1+d(n-1)
a1=first term
d=common difference
n=which term
first term is -20
common difference is 6
we want 50th term
a50=-20+6(50-1)
a50=-20+6(49)
a50=-20+294
a50=274
the 50th term is 274
