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प्रश्न
Solve for x in the following in-equation, if the replacement set is R;
9 - 4x ≤ 15 - 7x
उत्तर
9 - 4x ≤ 15 - 7x
9 - 4x ≤15 - 7x
9 - 15 ≤ 4x - 7x
-6 ≤ -3x
6 ≥ 3x ( multiplying by -1 changes the sign)
x ≥ 2
Since, replacement set is R
Solution set= {x : x ∈ R and x ≤ 2}
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