11+1
Anonymous
Exactly as in the question: 7+5 = 12
20
Commutativity of addition or the fact that addition is Abelian.
12
the number is 11
Exactly as in the question: 7+5 = 12
20
12.
9
Commutativity of addition or the fact that addition is Abelian.
the number is 11
12
57
5 x 7 and 6 x 7
6+6=12, easy :D
What is 3x-6y=12
Adding zero to any number exemplifies the identity property of addition. For example, 12 + 0 = 12 where adding zero does not change the sum.