Problem 457

 

Solving using the addition and multiplication principles.

7 + 7x < 14

The solution set is {x│x _ _}.

 

Solution:-

 

Add -7 both sides

7 – 7 + 7x < 14 – 7

7x  <  7

Multiply both sides by

7x* < 7*

X  < 1

The solution set is {x|x < 1}