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The solution of the equation 3x + 7 = –20 is ______. - Mathematics

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Question

The solution of the equation 3x + 7 = –20 is ______.

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Solution

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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Chapter 7: Algebra - Exercise [Page 110]

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NCERT Exemplar Mathematics [English] Class 6
Chapter 7 Algebra
Exercise | Q 28. | Page 110
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