Blm ngerti soal kye gini! Mohon bantuan

²log x + 3²logy =13
²logx-²logy= 5
——————–––– -
4 ²log y =8
²logy =2
y=4
²logx+3²log4=13
²logx+3²log2²=13
²logx+6=13
²logx=7
x=2^7
x=128
x+y
128+4=132