Answer
Answers may vary
Work Step by Step
We know that the given equations must satisfy the initial condition. Thus, we find an equation which makes the first statement true, starting with:
$$x+y=z$$
This will not be a true statement, so we multiply x by two to find an equation that will work:
$$2x+y=z....(1)$$
We now find another equation that satisfies the equation. We know that x is twice as great as y, so we find:
$$ 2y = x...(2)$$
We now find a third equation. Since z is 5 times as great as y, we can write:
$$5y=z...(3)$$
