KS3. Algebra. 7. Equations to solve problems

Although algebra is interesting in its own right, it is mostly used to solve problems that come from the sciences and disciplines such as economics. Modelling means using mathematical language to represent problems. We begin to develop this skill here.


The sum of three consecutive numbers is 48. What are the numbers?


Let’s complete exercise 8E on page 121 of the textbook:

The answers are below:

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