Question

10 less than five of a certain number is fourteen more thsn 7 times a certain number what is the number

Answer 1

Let number be x,
According to Q's: 5x-10= 7x+14
=> 2x= -24
=> x= -12

Answer 2

let the number be x, then;
5x-10 = 7x + 14
-24 = 2x
x = -12

hence the required number is -12.