a+ 3      =   a+2
a-2              a+7
where a is not equal to 2 , a is not equal to 7.

Dear Student ,
Please find below the solution to the asked query :

a+3a-2=a+2a+7a+3a+7=a+2a-2a2+3a+7a+21=a2+2a-2a-410a+21=-410a=-25a=-2510=-52=-2.5   ANS...
 
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a= -25/10= -5/2= -2.5
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