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Murljashka [212]
3 years ago
13

5x-9=-23?explain pls

Geography
2 answers:
drek231 [11]3 years ago
3 0
5x - 9= -23
add 9 to both sides
5x - 9 + 9= -23 +9
negative and positive 9s cancel out
5x= -14
divide both sides by 5
5x/5= -14/5
5 over 5 is the same as 1
x= -14/5

CHECK:
5x - 9= -23
5(-14/5) - 9= -23
5 over 5 is the same as 1
-14 - 9= -23
-23= -23

ANSWER: x= -14/5

Hope this helps! :)
Vlad [161]3 years ago
3 0
Hello there. I might add that this is maths and not geography but, oh well. c:

5x - 9 = - 23
____________________

Add 9 to -9 (to cancel it out) and to -23 

The equation now looks like this: 
____________________

5x =  -14

___________________

In order to solve for 'x' divede the coefficient of x with itself and what

it's equivalent to. So it'll look like this: 
__________________-

5x/5 = x

-14/5 = -2.8 

x = -2.8

______

Now check. You can do this by plugging in 'x' to the equation. 

______

5(-2.8) - 9 = -23 

-14 - 9 = -23

-23 = -23 --- True. 



I hope you'll be able to accomplish this on your own one day. Until then, goodbye!
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