47,55,20,58,53,..56 Selesaikan deret berikut

suku pertama a = 47
b= u2-u1
= 55-47
=8
un= 56
un= a+ ( n-1 ) b
56= 47 +( 8n) 8
= 55-8
= 56-55= 47 = 56/10
= 5.6