Question

a	-2	18	12		-5
b	3	-18		6
a+b			0	4	-10

TINH GIUM MINH NHA

Answer 1

a	-2	18	12	-2	-5
b	3	-18	-12	6	-5
a + b	1	0	0	4	-10

Tick nha ~~~~~

Answer 2

1)a+b=1

2)a+b=0

3)b=-12

4)a=-2

5)b=-5

Answer 3

a	-2	18	12	-2	-5
b	3	-18	-12	6	-5
a+b	1	0	0	4	-10

 

 

Answer 4

a	-2	18	12	-2	-5
b	3	-18	-12	6	-5
a+b	1	0	0	4	-10