Question

Compound inequalities

4x+7<11 or 1-x<=-2

Answer 1

4x+7 < 11
4x < 4
x < 1

1-x <= -2
-x <= -3
x >= 3

so, x<1 or x>=3

see at

http://www.wolframalpha.com/input/?i=solve+4x%2B7%3C11+or+1-x%3C%3D-2

Answer 2

-8 < 10 + 2k <=2