a) x <7
x∈ (-∞ ,7)
b) x > 2
x∈(2,+∞)
c)x > -4
x∈(-4, +∞)
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a) x <7
x∈ (-∞ ,7)
b) x > 2
x∈(2,+∞)
c)x > -4
x∈(-4, +∞)