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j=jeruk
3a+5j=85.000. x5
5a+7j=123.000. x3
15a+25j=425.000-15a+21j=369.000
4j=56.000
j=14.000
3a+5j=85.000
3a+5(14.000)=85.000
3a+70.000=85.000
3a=85.000-70.000
3a=15.000
a=5.000
1a+1b=14.000+5.000=19.000