Question

please explain this question ​

Answer 1

Answer:

a) a=12, b=-4, c=2

a+(b+c)≠a+b+a+c

12+(-4+2)≠12+(-4)+12+2

10≠22

b) a=-10, b=2, c=3

a+(b+c)≠a+b+a+b

-10+(2+3)≠(-10)+2+(-10)+3

-5≠-15

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