NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 4: Simple Equations - Problems and SolutionsQuestion 80
Class 7 - Mathematics - Unit 4: Simple Equations - Problems and Solutions
Question. 80
If 45 is added to half a number, the result is triple the number. Find the number.
Answer:
18
Detailed Answer with Explanation:
Equation: x/2 + 45 = 3x ⇒ 45 = (5x/2) ⇒ 90 = 5x ⇒ x = 18.