Associativity and commutativity.
then 4 plus 3 equals 28 and 3 plus 3 equals 18 and 7 plus 5 equals 84 .... its easy you just have to multiply the answer with the first number.. for example : 2 plus 3 equals 5 but when you multiply the answer with the first number (2) it becomes equals 10, and so on the others..
No.
42
67 plus 3 equals 70.
3 plus 1 plus 4 equals 8
Yes, -8 plus plus 3 equals -5. The "plus plus" is equivalent to a positive sign, so -8 plus (+3) equals -5.
It can be anything. Example: x=1
5 plus 3 plus 7 does equal 5 plus 7 plus 3; this is an example of the commutative property of addition. Therefore, the statement is true.
12
2.5 plus 6 plus 3 equals 2.5 plus 6 plus 3
89