11+1
Exactly as in the question: 7+5 = 12
20
The statement "5 + 7 equals 12" is incorrect; the correct sum of 5 and 7 is 12. This can be verified by adding the two numbers together: 5 + 7 = 12. Therefore, the statement is accurate.
Commutativity of addition or the fact that addition is Abelian.
57
Exactly as in the question: 7+5 = 12
19 plus 12 equals 31. This is because addition is a mathematical operation that combines two numbers to find their total sum. In this case, adding 19 and 12 together results in a sum of 31.
20
12.
9
The statement "5 + 7 equals 12" is incorrect; the correct sum of 5 and 7 is 12. This can be verified by adding the two numbers together: 5 + 7 = 12. Therefore, the statement is accurate.
Commutativity of addition or the fact that addition is Abelian.
57
12
the number is 11
The sum of 4 and 8 means: 4 + 8 = 12 so the answer is 12.
5 x 7 and 6 x 7