a) 5x -11 < 29
5x - 11 < 29
5x < 29 + 11
5x < 40 / : 5
x < 8
5x-11<29
5x<29+11
5x<40 /:5
x<8
x∈(-∞, 8 )
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5x - 11 < 29
5x < 29 + 11
5x < 40 / : 5
x < 8
5x-11<29
5x<29+11
5x<40 /:5
x<8
x∈(-∞, 8 )