paigeby04 paigeby04

21-03-2018
Mathematics

contestada

How do you solve: -1+7n>-4(-7n-5)
Having problems on the first step..
Thanks for your help!!

Respuesta :

LAGRHA15 LAGRHA15

21-03-2018

-1 + 7n > -4(-7n - 5)
- 1 + 7n > 28n + 20
- 28n - 28n
---------------------------------
-1 - 21n > 20
+ 1 + 1
---------------------------
-21n > 21
-------- -------
-21 -21

n > -1

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