Respuesta :

saraharif006

Answer:

5

Step-by-step explanation:

20 ( 20 - x ) = 300

By transposing,

20 - x = 300 / 20

20 - x = 15

-x = 15 - 20

-x = -5

- and - get cancelled

so, x = 5

Hope this helps

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20(20-x)=300
400-20x=300
-400 -400
-20x=-100
-20x/-20 = -100/-20
x= 5
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good job