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प्रश्न
Simplify the expression and find the value if x is equal to 2:
3 (x + 2) + 5x - 7
बेरीज
उत्तर
3 (x + 2) + 5x - 7
= 3x + 6 + 5x - 7
= 3x + 5x + 6 - 7
= 8x - 1
Putting x = 2 we get,
= (8 × 2) - 1
= 16 - 1
= 15
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