NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 4: Simple Equations - Multiple Choice Questions
Question 5

Question.  5

The equation which cannot be solved in integers is

(a)

\(5y - 3 = -18\)

(b)

\(3x - 9 = 0\)

(c)

\(3z + 8 = 3 + z\)

(d)

\(9y + 8 = 4y - 7\)

Detailed Answer with Explanation:

\(3z + 8 = 3 + z \implies 2z = -5 \implies z = -\dfrac{5}{2}\), not an integer.