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x=4 ∨ x=-2
b)x+1≥10 ∨ x+1≥-10
x≥9 ∨ x≥-11
c)x-3≤1 ∨ x-3≤-1
x≤ ∨ x≤2
d)x-15>2 ∨x-15>-2
x>17 ∨x> 13
e)x-7≤10 ∨ x-7≤-10
x≤17 ∨x≤-3
f)2x+3=4 ∨2x+3=-4
2x=1 ∨2x=-7
x=1/2 ∨ x=3 1/2
g)3x-1=5 ∨3x-1=-5
3x=6 ∨ 3x=4
x=2 ∨ x=4/3
h)x+6≤2 ∨ x+6≤-2
x≤-4 ∨ x≤-8
i)5x-3=12 ∨5x-3=-12
5x=15 ∨ 5x=-9
x=3 ∨ x=-9/5
j)x-9<12 ∨x-9<-12
x<21 ∨ x<-3
k) x+3≥5 ∨x+3≥-5
x≥2 ∨ x≥-8