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b=u2-u1
=16-8
=8
dit:rumus suku ke n.......?
jwb:un=a+(n-1)b
un=8+(n-1)8
un=8+8n-8
un=8-8+8n
un=8n
B.DIK:A=8
B=U2-U1
=13-8
=5
DIT:RUMUS SUKU KE N......?
JWB:UN=A+(N-1)B
UN=8+(N-1)5
UN=8+5N-5
UN=8-5+5N
UN=3+5N
D.DIK:A=16
B=U2-U1
=25-16
=9
DIT:RUMUS SUKU KE N....?
JWB:UN=A+(N-1)B
UN=16+(N-1)9
UN=16+9N-9
UN=16-9+9N
UN=7+9N