emily53
emily53
14-09-2015
Mathematics
contestada
the sum of three times a number and 12 is twenty
Respuesta :
SchwarzschildRadius
SchwarzschildRadius
14-09-2015
So,
"The sum of three times a number"
3n +
"and 12"
3n + 12
"is 20"
3n + 12 = 20
Subtract 12 from both sides.
3n = 8
Divide both sides by 3.
[tex]n = \frac{8}{3} \ or\ 2 \frac{2}{3} [/tex]
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