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How is this true?.........​
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How is this true?.........​

How is this true?.........​-example-1
User Yeahia Md Arif
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1 Answer

7 votes

Answer:

because the a and the b both have ones next to them so a is 1 and b is 1 so the sum is 2 and the minus changes because it is within the two lines

Step-by-step explanation:

User Vitaly Babiy
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