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प्रश्न
The solution of the equation 3x + 7 = –20 is ______.
उत्तर
The solution of the equation 3x + 7 = –20 is – 9.
Explanation:
Given, `3x + 7` = – 20
⇒ `3x = -20 - 7` .....[Transposing + 7 to RHS]
⇒ `3x` = – 27
⇒ `(3x)/3 = (-27)/3` .....[Dividing both sides by 3]
⇒ x = – 9
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