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Find a+b+c, given that x + y is not equal to -1 and

 

ax + by + c = x + 7

a + bx + cy = 2x + 6y

ay + b + cx = 3x - 1.

 Nov 4, 2021
 #1
avatar+115335 
+1

Hint:

Add all the left hand sides = add all the right hand sides

 

Now it is easy.

 Nov 5, 2021

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