SOLUTION: how do you add/subtract inequalities ?

Algebra ->  Inequalities -> SOLUTION: how do you add/subtract inequalities ?       Log On


   

Question 396426: how do you add/subtract inequalities ?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Inequalities follow the same arithmetic properties as equalities, with a few exceptions (such as multiplying both sides by a negative number).

If x > y, then x + c > y + c

If x > y and c is positive, then cx > cy. However if c is negative, we have to switch the inequality sign to obtain cx < cy.