Question

Do the equations x = 4y + 1 and x = 4y – 1 have the same solution? How might you explain your answer to someone who has not learned algebra?

Answer 1

x = 4y + 1

x - 4y = 1

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x = 4y – 1

x - 4y = -1

Answer 2

So x = 4y + 1 and x = 4y – 1

turns into x - 4y = 1 and x - 4y = -1