College Algebra / Alg 159 · Atom · ~20 seconds
The Addition Property of Inequality
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The addition property of inequality says adding or subtracting the same number on both sides leaves the inequality's direction unchanged.
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x + 3 < 7 becomes x < 4 after subtracting 3 — and 0 satisfies both, while 5 satisfies neither.
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Direction is the thing being protected.
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- Nothing — this is a starting point.
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- Nothing yet depends on this.