-13+4+(-8)= -9+(-8) = -9-8 = -17
13
273 13+8 = 21 and 13*21 = 273
5
2x + 5 = 13 2x = 8 2x/2 = 8/2 x=4
5
-8 + 4 - (-9) = -8 + 4 + 9 = -8 + 13 = 5.
Negative 17 plus 121 divided by 8 equals 13.
8 + 16 - 8 + 4 + 13 = -1
if u mean +13 - (+8) = 5, then yes
4+4 equals 8.
13.
Anton Heinrich Springer?