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प्रश्न
Simplify this expression and find its value if x = 3, a = −1, b = −2.
3x - 5 - x + 9
बेरीज
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उत्तर
3x - 5 - x + 9 on putting x = 3 in the given equation
3x - 5 - x + 9
= 3x - x - 5 + 9
= 2x + 4
= (2 × 3) + 4
= 10
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