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Solve[{(120-a)/2+a/(-I 5)+(b-a)/(-I 5)+(14.14+I 14.14)/-I 5==0, (b-I 120)/4+b/(I 4)+(a-b)/(-I 5)+ (-14.14-I 14.14)/(I 4)==0}, {a, b}]
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