若a/b是有理数,定义新运算“*”a*b=2ab+1,例如：｛-3｝*4=2*4+1=23试计算：｛1｝3*｛-5｝｛2

｛1｝
3*｛-5｝
=2*3*(-5)+1
=-30+1
=-29
｛2｝
｛6*｛-7}｝*｛-2｝
=｛2*6*(-7)+1}*｛-2｝
=｛-84+1}*｛-2｝
=｛-83}*｛-2｝
=2*(-83)*(-2)+1
=332+1
=333