|1/3-7x/4|≤10 please answer this fast
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Answer:
l 1/3-7x/4 l ≤10
l 4-21x/12 l ≤10
l 4-21x l ≤ 10*12
l 4-21x l≤ 120
4+21x ≤ 120
21x ≤ 120-4
x ≤ 120-4/21
x≤ 116/21
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