Question

[Pham Trong Bach]

Tìm x ∈ ℤ ,biết:

a ) 3 8 + − 11 8 < x < 22 9 + 5 18 ; b ) − 7 8 + 5 6 < x 24 < 2 3 + − 5 8 ; c ) 1 3 + 1 4 + 1 12 ≤ x ≤ 7 10 + 27 6 ; d ) − 31 14 + 115 161 + 111 74 < x ≤ 6 36 + 9 27 + 48 96

Answer 1

[Cao Minh Tâm]

a) – 1 < x < 49 18 =>  x ∈ {0;1;2}

b) − 1 24 < x 24 < 1 14  => x = 0

c) 2 3 ≤ x ≤ 26 5 => x ∈ {1;2;3;4;5}

d) 0 < x  ≤ 1 => x = 1