If 2x - 10 = 20, what is the value of x - 5?
Q1. If 2x - 10 = 20, what is the value of x - 5?
Answer: 10
Explanation: From 2x−10=20, x=15. Therefore x−5=15−5=10. 10 is correct because it matches what the question requires. Show the calculation clearly when solving similar quantitative items.