Tìm số nguyên x, biết:
a) -5/19+3/19
Tìm số nguyên x, biết:
a) -5/19+3/19
By Cora
By Cora
a,-5/19+3/19<x/19 ≤13/19+-11/19
-2/19 <x/19 ≤2/19
⇒x ∈{-1;1;2}
b,-3/29-2/29 ≤x/29 ≤5/29-7/29
-5/29 ≤x/29≤-2/29
⇒x∈{-5;-4;-3;-2}
c,-7/8 + 5/6 ≤ x/24 ≤ 5/8 + -5/12
-1/24 ≤x/24≤ 5/24
⇒x∈{-1;1;2;3;4;5}
d)1/6 – 2/5 < x/30 ≤ 1/2 – 8/15
-7/30 <x/30 ≤-1/30
⇒x∈{-6;-5;-4;-3;-2;-1}
e) -7/2 + 1/10 + -8/5 < x ≤ 1/12 + -5/6 + -5/4
-5 <x ≤ -2
⇒x∈{-4;-3;-2}
f) -29/12+ 1 -19/12 ≤ x ≤ 3/4 – 1/3 +7/12
-3 ≤ x ≤ 1
x∈{-3;-2;-1;1}
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