SmarterEd

Aussie Maths & Science Teachers: Save your time with SmarterEd

  • Login
  • Get Help
  • About

v1 Algebra, STD2 A2 2021 HSC 9 MC

Marty is thinking of a number. Let the number be \(n\).

When Marty subtracts 4 from this number and multiplies the result by 7, the answer is 8 more than \(n\).

Which equation can be used to find \(n\)?

  1. \(7n-4=8n\)
  2. \(7(n-4)=8n\)
  3. \(7n-4=n+8\)
  4. \(7(n-4)=n+8\)
Show Answers Only

\(D\)

Show Worked Solution

\(\text{The description defines the following equation:}\)

\((n-4)\times 7\) \(=n+8\)
\(7(n-4)\) \(=n+8\)

 
\(\Rightarrow D\)

Filed Under: Linear Equations and Basic Graphs (Std 2-X) Tagged With: Band 4, smc-5240-50-Other

Copyright © 2014–2025 SmarterEd.com.au · Log in