The Story Problem
Part of the Fundamentals section of Coddy's Algebra journey. Lesson 64 of 64.
The last challenge is a word problem. Consecutive even numbers are 2 apart, so if the smaller one is n, the larger one is n + 2. Write their sum as an equation, collect the like terms, undo the addition, then divide. Finally, check the answer against the story: make sure the two numbers add up to the given total and that both are even.
Challenge
HardTwo consecutive even numbers add up to 46. Writing their sum gives n + (n + 2) = 46. Solve for the smaller number, n.
Try it yourself
n + (n + 2) = 46
Solve for n
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
All lessons in Fundamentals
1What an Equation Is
The EquationFinding the UnknownThe Same to Both SidesSolved Means AloneRecap: First Equations4Two-Step Equations
Two Layers to UndoSubtract, Then DivideAdd, Then DivideA Division InsideNegatives in Two StepsRecap: Two-Step Equations2One-Step Equations
Undoing AdditionUndoing SubtractionUndoing MultiplicationUndoing DivisionInverse OperationsRecap: One-Step Equations5Tidying First
Like TermsTerms and Numbers MixedThe Distributive PropertyDistributing a SubtractionTidy, Then SolveRecap: Tidying First