7. If x=-2, y=6 is a solution of the Equation 3ax +2ay =6, then find the value of b from 2(a-1) + 2(3b-4) =4
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X=-2 and y =6
: 3(-2)a+2(6)a=6
12a-6a =6
6a=6
Thus a =1
Thus 2(1-1)+2(3b-4)=4
6b-8=4
6b=12
Thus b =2
: 3(-2)a+2(6)a=6
12a-6a =6
6a=6
Thus a =1
Thus 2(1-1)+2(3b-4)=4
6b-8=4
6b=12
Thus b =2
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