This is the commutative property of addition 8 + 63 = 63 + 8. There is also a commutative property of multiplication 8 x 63 = 63 x 8, but no commutative property of subtraction 8 - 63 NOT EQUAL 63 - 8 and no commutative property of division 8 / 63 NOT EQUAL 63 / 8.
