Question

Please... bntu gue penting bgt.
tentukan nilai x dari deret aritmatika 2+5+8+...(3x-1) = 15.050
plisss pake cara.

Answer 1

A= 2
b = 3
s(x) = 15.050
Ux = 3x - 1
S(x) = x/2 { a + Ux)
30.100 = x(2 + 3x -1)
30.100 = x(3x+1) --> 30.100 = 100(301)
x = 100