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प्रश्न
If the replacement set is the set of whole numbers, find the solution set:
8 + 2x ≤ 28 − 3x
योग
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उत्तर
8 + 2x ≤ 28 − 3x
Move variables and constants
2x + 3x ≤ 28 − 8
⇒ 5x ≤ 20
Divide by 5:
x ≤ 4
Use the replacement set = whole numbers
Whole numbers = {0, 1, 2, 3, 4, 5, ...}
From x ≤ 4, the solution set is:
{0, 1, 2, 3, 4}
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