Gather like terms: 3t - t = 13 - 4 ie 2t = 9 so t =4½ Check: 3t = 13½ + 4 = 17½, 4½ +13 = 17½ QED
91
9=4a+13 9-13=4a -4=4a -4/4=a -1=a a=-1
1.75 or 13/4
13/10
13
14 + 5 + 13 + 4 + 9 = 45
8 + 16 - 8 + 4 + 13 = -1
-13 + 6 + 3 = -4
13/x+4=
13
13
32 base 4
3 + 6 + 4 = 13
-13+4+(-8)= -9+(-8) = -9-8 = -17
4 plus 6 plus 3 equals?Add 4 and 6 and get 10, then add 3 and 10 and get 13. Therefore, the answer to 4+6+3 is 13.
13 - 4 + 12 = 21