An even number + another even number are always even because if you think in terms of a number line, an even number always skips the odd numbers, when adding, so to speak. If you have 2+2 you are...
In math, even is just another way of saying divisible by 2. If you add or subtract two numbers that share a divisor, the resulting number will also share that divisor. So the sum or difference of a...
If a is even then there is an integer x such that a = 2xIf b is even then there is an integer y such that b = 2yThen a+b = 2x+2y = 2(x+y) ie 2 is a factor of a+b, that is, a+b is even.
asking that question is like asking how we know what 2 plus 2 there is no answer
Yes, there is an answer.
To add even numbers is to add sets of two. When you add sets of two, you will always come up...