It is the property that equals plus equals are equals.
it is 28
89
244 plus 8 equals 252
40
Yes, -8 plus plus 3 equals -5. The "plus plus" is equivalent to a positive sign, so -8 plus (+3) equals -5.
24
5
2048
273 13+8 = 21 and 13*21 = 273
Anton Heinrich Springer?
42