NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 3: Integers - Problems and SolutionsQuestion 78
Class 6 - Mathematics - Unit 3: Integers - Problems and Solutions
Question. 78
The sum of two integers is 30. If one integer is \(-42\), find the other.
Answer:
72
Detailed Answer with Explanation:
- The sum is 30. One number is (-42). We need the other number.
- Let the other number be (x).
- Write the equation in small parts:
(x + (-42) = 30) - Add (42) to both sides to cancel the (-42):
(x + (-42) + 42 = 30 + 42) - Simplify each side step by step:
((-42) + 42 = 0)
(x + 0 = 72) - So,
(x = 72) - Quick check:
((-42) + 72 = 30) ✓