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Compound inequalities

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

2 answers

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
-8 < 10 + 2k <=2
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