Jawabanmu

2014-09-10T21:28:05+07:00
F (a) = -23
2a - 3 = -23
2a = -23 + 3
2a = -20
a = -20 : 2
a= -10
2014-09-10T21:28:59+07:00
F(x) = 2x-3
f(a) = 2a-3 = 23

2a-3=23
2a = 23+3
2a= 26
a = 26/2
a = 13
maaf salah itu .. hasinya -23 ya ??
berarti .. 2a = -23+3 .. 2a=-20 . a=-20/2 .. a = 10