How do you solve the inequality 162 > -3a(5+1)162>3a(5+1)?

1 Answer
Jan 11, 2016

a> -9a>9

Explanation:

162>(-3a(5+1))162>(3a(5+1))

:.162>(-3a*6)

:.cancel(162)^27/cancel(6)^1>(-3a*cancel(6)^1/cancel(6)^1)

:.27>(-3a)

We can change sign and string inequality operator

:.color(red)-27color(red)<3a

We can change sign and

:.3a> -27

a> -cancel(27)^9/cancel(3)^1

a> -9