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anonymous
 one year ago
Solve for x: x − 8 = −5
Can someone explain the steps for how to solve this please?
anonymous
 one year ago
Solve for x: x − 8 = −5 Can someone explain the steps for how to solve this please?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the answer is 3, but if you subtract 85 that equals 3 which will give you the answer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0its x  8 = 5 the five is negative tho so..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I just want to know the steps to figuring this out cuz i know thats not the right answer sorry..

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0First, add 8 to both sides. Can you do that?

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1\[x8=5\]ok 1st step it to add 8 to both sides of the equation

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0\(\large x  8 = ~5\) \(\large ~~~~~+8~~~~~+8\)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0No. 8 + 8 = 0 5 + 8 = 3. That is good.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0You end up with \(\large x = 3\) Ok so far?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the 8 is not negative tho its x minus 8 equals negative 5

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1example solve for x... \[x7=9\]\[x=9+7\]\[x=16\]\[x=\pm 16\]

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0In our original equation, 8 (minus eight) means subtract 8. A subtraction can always be written as the sum of the opposite. So 8 means plus the opposite of 8. \(\large x  8 = 5\) \(\large x + (~8) = 5\) \(\large~~~~~~~~~~+8~~~~~+8\) After adding 8 to both sides, you get: \(\large x = 3\)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0Do you understand now how we add 8 to both sides to isolate \(x\)?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the options for it tho aren't just one number its one of these x = −13 and x = −3 x = 3 and x = −3 x = 3 and x = 13 No solution

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0plus i dont understand how you turned minus eight into negative eight, i dont understand why you would do that cri

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0Ok. Now we have a simple absolute value equation. On the left side we have just \(x\). This equals a number, 3, on the right side. Whenever you have an absolute value equation where something in absolute value signs equals a number, you separate it into two simple equations, both without absolute signs. This is the pattern. Then I'll show you with your equation. To solve the absolute value equation \(\large x = k\), where k is a nonzero number, solve these two equations \(\large x = k\) or \(\large x = k\)

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1heres another example ... dw:1439778127102:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0With your problem, the equation now is \(\large x = 3\) We separate it into two equations: \(\large x = 3\) or \(\large x = 3\) Since these two equations are already solved for x, that is the final solution.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0Let's go back to the 8 part above that is still bothering you. Subtraction is defined as adding the opposite. 8  2 means 8 + (2) 3  4 means 3 + (4) 5  (7) means 5 + 7 In general, for numbers a and b, a  b means a + (b) That is simply the definition of subtraction. In our equation, we are subtracting 8 from the absolute value of x. We can turn the subtraction of 8 into the addition of the opposite of 8. The opposite of 8 is 8, so \(\large x  8 = x + (8) \) Then when we add 8 to both sides to eliminate the 8 on the left side, we end up with 8 + 8 which zero. That is how we eliminate the 8 from the left side and end up with only \(\large x\) on the left side.
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