यदि (f(x)=9x+28), तो (f(3x)-f(x)) कब (108) होगा?

If (f(x)=9x+28), when will (f(3x)-f(x)) be (108)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

B. (x=6)

Step 1

Concept

(f(3x)-f(x)=(27x+28)-(9x+28)=18x). From (18x=108), (x=6).

Step 2

Why this answer is correct

The correct answer is B. (x=6). (f(3x)-f(x)=(27x+28)-(9x+28)=18x). From (18x=108), (x=6).

Step 3

Exam Tip

(f(3x)-f(x)=(27x+28)-(9x+28)=18x) है। (18x=108) से (x=6) है।

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Mathematics Answer, Explanation and Revision Hints

यदि (f(x)=9x+28), तो (f(3x)-f(x)) कब (108) होगा? / If (f(x)=9x+28), when will (f(3x)-f(x)) be (108)?

Correct Answer: B. (x=6). Explanation: (f(3x)-f(x)=(27x+28)-(9x+28)=18x) है। (18x=108) से (x=6) है। / (f(3x)-f(x)=(27x+28)-(9x+28)=18x). From (18x=108), (x=6).

Which concept should I revise for this Mathematics MCQ?

(f(3x)-f(x)=(27x+28)-(9x+28)=18x). From (18x=108), (x=6).

What exam hint can help solve this Mathematics question?

(f(3x)-f(x)=(27x+28)-(9x+28)=18x) है। (18x=108) से (x=6) है।