Question

Bantu jawab no7 dong

Answer 1

U5= 13 U8=22

U5=a+4b=13
U8=a+7b=22

3b=9
b=3
--> a+4b=13
--> a+4(3)=13
--> a=1

U20= a+19b
=1+19(3)
=58

Answer 2

B = 22-13/8-5 = 9/3 =3
U8 = a+(7)3 = a+21
22 =a+ 21 =a=1

U20 = 1+(19)3= 58