Question 324100
-20 - (-50) = x/9

1)First, you have to make the -50 into a positive 50. Think of it this way. If you put a one after the minus, then it becomes -1*-50.

New equation:  -20+50 = x/9

2)Now that that is done, add the 50 to the -20 (or subtract 20 from 50). Either way, you will get 30.

New equation:  30 = x/9

3)Finally, you have to make x/9 equal 1 in order to get x by itself. So, multiply both sides by 9 and you will have your answer.

Final equation:  270 = x




Adding Negative Numbers
  When you are adding negative numbers to positive numbers, it is the same as
  subtraction. Just subtract the negative number from the even number.
  24 + (-5) = x
  24 - 5 = x
  19 = x

Subtracting Negative Numbers
  When you subtract a negative number, the negative always turns into a
  positive number.
  17 - (-9) = x
  17 + 9 = x
  26 = x

Multiplying Negative Numbers
  If both numbers you are multiplying are negative numbers, then the answer
  will be positive. If one number is negative and the other is positive, then
  the answer will be negative.
  (-7)*(-4) = x
  28 = x

  (-8)*5 = x
  -40 = x