AthenaSinclair
AthenaSinclair
23-03-2018
Mathematics
contestada
x =
a) 20
b) 40
c) 80
Respuesta :
Аноним
Аноним
23-03-2018
[tex]x = \frac{1}{2} (x + 60 - 20)[/tex]
[tex]x = \frac{1}{2} (x + 40)[/tex]
[tex]x = \frac{1}{2}x + 20[/tex]
[tex]x - \frac{1}{2}x = 20[/tex]
[tex] \frac{1}{2}x = 20[/tex]
[tex]x = 20 \times 2[/tex]
[tex]x = 40[/tex]
Answer Link
fishtank
fishtank
13-09-2018
The answer is b) 40
Have a great day!
-Fishtank
Answer Link
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