x+y=a+b ax+by =-a+b solve the equation
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in the last part I omitted some steps
x= (-b2 -ba-a+b)/(a-b)
= -(b2+ba+a-b)/ -(b-a)
= (b2+ba-b+a)/(b-a)
hope it helps....
x= (-b2 -ba-a+b)/(a-b)
= -(b2+ba+a-b)/ -(b-a)
= (b2+ba-b+a)/(b-a)
hope it helps....
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