69
26 plus 16 equals 42. This can be calculated by adding the two numbers together: 26 + 16 = 42.
105.
13 + 16 + 18 + 20 + 21 + 26 + 27 + 27 + 28 + 36 + 39 + 42 + 43 = 356
This can be written as 16 + x = 42. We know that x, or your "something" is exactly 16 less than 42. All you would have to do to solve it would be to subtract 16 from 42. 42-16=26 so your x value is 26.
15x26=390
26 x 42 = 1092
26
42 + 42 = 84
42 plus 3 is 45.
42: 26 * 2= 42 6 * 7= 42
over sixty-one 26/42 x 100 = 2,600/42 = 61.904761904762%
26 + 26 + 26 + 26 = 4 x 26 = 104