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प्रश्न
Solve: 3x + 5 + 2x + 6 + x = 4x + 21
योग
उत्तर
3x + 5 + 2x + 6 + x = 4x + 21
⇒ 6x + 11 = 4x + 21
⇒ 6x - 4x = 21 - 11
⇒ 2x = 10
⇒ x = `10/2`
⇒ x = 5
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