Math CentralQuandaries & Queries


Question Jaypercey:

the difference between two number is 7 find the two number if the larger 3 times the smaller


Suppose the larger number os $x$ and the smaller is $y.$ Since the difference is 7 you know that

\[x - y = 7.\]

You also know that the larger number is 3 times the smaller number. Write this fact as an equation in $x$ and $y.$ Solve the two equations for $x$ and $y.$

Write back if you need more assistance,

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