Which of the following is not allowed in a given equation
(a) Adding the same number to both sides of the equation
(b) Subtracting the same number from both sides of the equation
(c) Multiplying both sides of the equation by the same non-zero number
(d) Dividing both sides of the equation by the same number

Solution:

Since dividing both sides of the equation by the same non-zero number is allowed.

Thus, here option (d) dividing both sides of the equation by the same number (which may be zero) is not allowed.

Hence the correct option is (d) Dividing both sides of the equation by the same number.

✦ Try This: Which of the following is/are allowed in a given equation? (a) Adding the same number to both sides of the equation, (b) Subtracting the same number from both sides of the equation, (c) Multiplying both sides of the equation by the same non-zero number, (d) Dividing both sides of the equation by the same number.

Since dividing both sides of the equation by the same non-zero number is allowed.

Thus, options (a) (b) and (c) are allowed.

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 4

NCERT Exemplar Class 7 Maths Chapter 4 Problem 3

Which of the following is not allowed in a given equation (a) Adding the same number to both sides of the equation, (b) Subtracting the same number from both sides of the equation, (c) Multiplying both sides of the equation by the same non-zero number, (d) Dividing both sides of the equation by the same number

Summary:

Thus, here option (d) dividing both sides of the equation by the same number (which may be zero) is not allowed

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