" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1. awal= -15
beda= +7
jd a+(n-1)b= -15+(n-1)7 = -15+7n-7= 7n-22
2. awal= -4
beda= +3
jd a+(n-1)b= -4+(n-1)3= -4+3n-3= 3n-7