Question

verify( a+b)+c=a+(b+c) wherea=2/3b=-3/4c=7/5​

Answer 1

Answer:

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Step-by-step explanation:

2/3+(-3/4)+7/5=2/3(-3/4+7/5)

8-9/12+7/5=2/3(-15+28/20)

-1/12+7/5=2/3+13/20

-5+84/60=40+39/60

79/60=79/60

prooved

Answer 2

Given,

a=2/3

b=-3/4

c=7/5

(a+b)+c=a+(b+c)

[2/3+(-3/4)]+7/5=2/3+(-3/4+7/5)

(2/3-3/4)+7/5=2/3+(-3/4+7/5)

(8-9/12)+7/5=2/3+(-15+28/20)

-1/12+7/5=2/3+13/20

-5+84/60=40+39/60

79/60=79/60

verified

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