Question

5
Verify that (x + y) + x + y by taking x=-2/7, y=4/7
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Answer 1

Answer:

(x-y)-1= (-2/7-4/7)-1

=-6/7-1

=-13/7

and

x-1-y-1= x-y-2

=-2/7-4/7-2

=-2-4-14/7

=-20/7

so not equal

Answer 2

Answer:

$(- 2 \div 7 + 4 \div 7) + - 2 \div 7 + 4 \div 7$

$(2 \div 7) + 2 \div 7$

$4 \div 7$

Step-by-step explanation:

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