Posted by gary on Wednesday, March 13, 2013 at 2:15pm.
For the first one just add 7 to each part of the inequality.
that will leave x alone in the middle.
For the second one, this gets a little tricky.
You have to divide each part of the inequality by -12. Whenever you multiply or divide and inequality by a negative number you have to change the direction of the inequalities.
8> x > -1
Saying 8 is greater than 8 and x is greater than -1
is the same thing as saying -1 is less than x and x is less than 8.
we can right the answer in the normal format.
-1 <x <8
thank you, Dr. Jane
Can i ask two more question
1. solve the following inequality to find a range of values for x: -11 < -4-x < -7
2. solve the following inequality to find a range of values for x: -25 < -x < -10
1. solve the following inequality to find a range of values for x: -11 < -4-x < -7
2. solve the following inequality to find a range of values for x: -25 < -x < -10
1. you have to add 4 to each part of the inequality and then divide by -4. That will cause the same reversal as above. Be careful with that final answer.
2. Multiply each part by -1
25>x>10
You have to turn this around for your final answer.. Like we did above.