30
In the number: 5i, 5 is called the coefficient of i.
105
the first 5 multiplies of 5 are 5, 10, 15, 20, 25
13, 26, 39, 52, 65
They are 5, 10, 15, 20, 25 and 30.
The first five multiples of 12 are: 12, 24, 36, 48, 60
Because 10 is a multiple of 5.2 x 5 = 10
140, 280, 420, 560, 700
68 - 5x = 3*(x + 4) 68 - 5x = 3x + 12 56 = 8x x = 7
2, 3, 5, 7, 11, 13
-5 and -1