31 + 69 = 100
31 is 44.93% of 69.
69 + 69 = 138.
69%. Just subract 31 from 100. 100-31=69.
420 plus 69 equals 489.
69 plus 54 plus 99 plus 62 plus 69 plus 62 plus 34 plus 59 plus 74 plus 99 plus 78 equals 759
69
77 plus 76 plus 69 plus 56 is equal to 278.
29 + 69 + 900 = 998
69 + 78 + 82 = 229
The answer is 100. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
23 plus 69 plus 13 plus 3 percent of 100 percent = 108 = 23 + 69 + 13 + 3 * 100% = 23 + 69 + 13 + 3 = 108
The atomic number of gallium is 31. So there are 31 protons, 31 electrons and 38 neutrons in Ga-69.