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5+20x =20-10x
Urgentt!


Răspuns :

20x + 10x = 20 - 5 
30x = 15 
x = 15 / 30 
x = 1 / 2 
5+20x=20x-10
20x+10x=20-5
30x=15x
x=15:30
x=1\2