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11. By taking the values of a, b and c as 20,-4 and 2 respectively verify that:a +(b+c)+(a+b)+(a+c)

Answer»

a=20 ,b=-4 ,c=2

now, a÷(b+c)=20÷(-4+2) =20÷(-2) =-10 Now,(a÷b)+(a÷c)={20÷(-4)}+(20÷2)=(-5)+(10)=5 -10 is not equal to 5.



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