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प्रश्न
Solve for x in the following in-equation, if the replacement set is R;
x + 7 ≥ 15 + 3x
उत्तर
x + 7 ≥ 15 + 3x
x + 7 ≥ 15 + 3x
x - 3x ≥ 15 - 7
-2x ≥ 8
2x ≤ -8
x ≤ -4
Since, replacement set is R
Solution set= {x : x ∈ R and x ≤ -4}
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