0
Anonymous
2(x + 4) < 122(x) + 2(4) < 122x + 8 < 122x + 8 - 8 < 12 - 82x < 42x/2 < 4/2x < 2Thus, all real numbesr less than 2 satisfy the inequality.
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20
The number is 7.
42,89
13 and 26
18