加法

[0]	(-6) ＋ (-13)	=	答え ｘ -19
[1]	(+11) ＋ (-13)	=	答え ｘ -2
[2]	(-17) ＋ (-6)	=	答え ｘ -23
[3]	(-12) ＋ (+19)	=	答え ｘ +7
[4]	(-12) ＋ (-17)	=	答え ｘ -29
[5]	(-7) ＋ (-10)	=	答え ｘ -17
[6]	(+11) ＋ (-8)	=	答え ｘ +3
[7]	(+10) ＋ (-16)	=	答え ｘ -6
[8]	(+14) ＋ (+9)	=	答え ｘ +23
[9]	(+6) ＋ (-11)	=	答え ｘ -5

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