Are you trying to say 17 + 6 + (7-9) ? = 21
-4 + 21 = 17
-21
2z+17=21 subtract 17 from both sides. 2z=4 divide both sides by 2 z=2
You can't. 17 + 2n = 21 + 2n gives: 2n = 4 + 2n which gives 0=4 which is not possible so the sum is not solveable.
17 + 21 = 38 17 x 21 = 357
4 + 17 = 21
17 plus 21 equals 38
55 + 34 + 31 + 27 + 21 + 21 + 20 + 17 + 15 + 15 = 256
Are you trying to say 17 + 6 + (7-9) ? = 21
-4 + 21 = 17
-21
21 Uhm, no, 17 actually...
14/21 + 1/7 = 17/21
16 + 16 + 16 + 17 + 18 + 18 + 18 + 19 + 19 + 20 + 20 + 20 + 21 = 238
17/21
2z+17=21 subtract 17 from both sides. 2z=4 divide both sides by 2 z=2