Question 1172849
3y=a-x;15y=5a-5x
5y=b-2x; 15y=3b-6x
so 5a-5x=3b-6x
3b-5a=x
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let a=2 and b=3; x should equal 3b-5a=9-10=-1
then x+3y=2
and 2x+5y=3
so 5x+15y=10
and -6x-15y=-9
-x=1
x=-1