Question 782542
1	a	+	8	b 	=	8	.............1	
Total value								
1	a	+	3	b 	=	-2	.............2	
Eliminate	b

subtract (2) from (1)

5b=10
b=2

substitute b in (1)
a+8b=8

a+8*2=8
a+16=8
a=-16+8
a=-8