YuriRoc7laura YuriRoc7laura

14-02-2016
Mathematics

contestada

Solve. -2(6 - 20n) = 20(2n - 3)
a. 40
b. 36
c. no solution
d. all real numbers

Respuesta :

RishabhGoyal RishabhGoyal

14-02-2016

-2(6-20n) = 20(2n-3)
-12 + 40n = 40n - 60
40n = 40n - 60 + 12
40n - 40n = 60 + 12 (dont minus 40n - 40n yet, we can factorise it)
n(40-40) = 60 + 12
n = (60 + 12)/(40-40)
n = 60 + 12/ 0

Therefore no solution as we cannot divide by 0

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