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Solve: 9 − 4x < x − 6 < 10 − 3x
[Note: Use the word 'and' to combine two conditions.]
9 − 4x < x − 6 and x − 6 < 10 − 3x
−4x − x + 9 < −6
−5x + 9 < −6
−5x < −15
x > 3 (divide by −5, reverse inequality)
x + 3x − 6 < 10
4x − 6 < 10
4x < 16
x < 4 (divide by 4)
x > 3 and x < 4
3 < x < 4
Number Line Representation:
Solution: 3 < x < 4