Question

8. If 5 is subtracted from 4 times of a number gives 19 then the number
is........​

Answer 1

The no will be 3.5

Answer 2

The number is 7.
5-(4X)=19
-4X =19-5
-4X =14
X =14/-4=7/-2.

Checking:
5-(4*7/-2)=19
5-(2*-7/1)=19
5-(-14) =19
19 =19