Question

Negative four times a number decreased by nine is greater than negative thirteen

Answer 1

x<1

Explanation:

Le the unknown number be x;

Negative four times a number is expressed as -4x

Negative four times a number decreased by nine is expressed as -4x - 9

If this expression is greater than negative thirteen, then;

-4x - 9 > -13

-4x - 9+9 > -13+9

-4x > -4

x < -4/-4

x < 1

Hence the required solution is x<1