a+b+c+d=1
a+3b-c=5
a-b+2c-4d=0
a+2b-2c+6d+9
fin the values of a,b,c,d
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Algebra 2 homework
a+b+c+d=1
a+3b-c=5
a-b+2c-4d=0
a+2b-2c+6d+9
fin the values of a,b,c,d