Simultaneous Equation

x =y/(130 ) - 1/(13 )
y=100x+30

can somebody help me? I keep getting different answers.
keep it in simple thanks!
Will vote for best answer! :)

x=y/130-10/130
y-30=100x

x=(y-10)/130
x=(y-30)/100

(y-10)/130=(y-30)100
100y-1000=130y-3900
30y=2900
y=290/3=96.66

290/3=100x+30
(290-90)/3=100x
x=2/3=0.66

x=(100x+30)/130-(1/13))=(100x+30-10)/130
=>130x=100x+20
=>30x=20
=>x=2/3


y= 100(2/3)+30=290/3