You should be able to
formulate simultaneous equations from world problem using 3Cs
Please watch the video lessons after this section.
Use 3Cs to breakdown the question's information
Steps:
When solving simultaneous equations
Label both equations as (1) and (2)
Choose either Elimination or Substitution Method to solve (Only pick one method)
Once you find one variable, remember to substitute and find the other variable
You must have 2 values, one for each variable as your answer
Check if you answer is correct by using your calculator
When answering the question, also state why one value cannot be used
When talking about age or length, it cannot be negative.
So the statement should read:
As the age cannot be negative, therefore the age is ......
As the length cannot be negative, therefore the length is ......