NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 4: Simple Equations - Multiple Choice QuestionsQuestion 15
Class 7 - Mathematics - Unit 4: Simple Equations - Multiple Choice Questions
Question. 15
Which of the following equations cannot be formed using the equation \(x = 7\)?
(a)
2x + 1 = 15
(b)
7x - 1 = 50
(c)
x - 3 = 4
(d)
\(\dfrac{x}{7} - 1 = 0\)
Detailed Answer with Explanation:
If \(x = 7\):
\(7x - 1 = 7(7) - 1 = 49 - 1 = 48\), not 50. Hence option (b) is invalid.