Összeadás 3.                                                                       ×vissza

3. feladat megoldása

	1	0	–	4	0	–	2	0	+	7	0	=	8	0	–	6	0	=	2	0
–	5	0	–	8	0	+	2	0	+	5	0	=	2	0	–	8	0	=	–	6	0
	2	0	–	3	0	+	4	0	+	2	0	=	8	0	–	3	0	=	5	0
–	2	0	+	4	0	–	3	0	+	1	0	=	5	0	–	5	0	=	0
	5	0	–	6	0	+	8	0	–	3	0	=	1	3	0	–	9	0	=	4	0