NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 4: Simple Equations - Problems and SolutionsQuestion 104
Class 7 - Mathematics - Unit 4: Simple Equations - Problems and Solutions
Question. 104
Follow the directions and correct the given incorrect equation, written in Roman numerals:
(a) Remove two of these matchsticks to make a valid equation:
IX − VI = V
(b) Move one matchstick to make the equation valid. Find two different solutions.
Answer:
(a) X − V = V
(b) VI + IV = X or VI + V = XI
Detailed Answer with Explanation:
(a) Removing two sticks makes the valid Roman numeral equation X − V = V.
(b) By shifting one stick, we can form VI + IV = X or VI + V = XI.