mayawali
mayawali
12-01-2016
Mathematics
contestada
7x-8 = 3x
What does x equal?
Respuesta :
Willchemistry
Willchemistry
12-01-2016
7 x - 8 = 3x
add 8 to both sides:
7 x - 8 + 8 = 3 x + 8
7x = 3 x + 8
subtract 3x from both sides:
7 x - 3 x = 3 x + 8 - 3x
4x = 8
Divide both sides by 4 :
4x / 4 = 8 / 4
x = 2
hope this helps!.
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Exvited
Exvited
12-01-2016
[tex]7x - 8 = 3x \\ \\ -8 = 3x - 7x \\ \\ -8 = -4x \\ \\ \frac{-8}{-4} = x \\ \\ \frac{8}{4} = x \\ \\ 2 = x \\ \\ x = 2 \\ \\ Answer: \fbox {x = 2} [/tex]
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