It's a false, erroneous, mistaken, and inaccurate statement.
15
-15 + 4 = -11
3.75 x 4 = 15
It is: 28-4-9 = 15
4
19
It is: -5*3 = -15.
When X = 4, 15X = 15 * X = 15 * 4 = 60
15
You can get 15 using four 4s by using the following expression: ( 4 \times 4 - 4 / 4 ). Here, ( 4 \times 4 ) equals 16, and ( 4 / 4 ) equals 1. Subtracting 1 from 16 gives you 15.
15
4