i need help with substition

i need help with substition

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The substitution method usually refers to a way to solve a system of equations. Do you have a second equation? If you do, the idea is to solve one equation for a variable, like y. So solve equation 1 for y. Then in equation 2, replace y with what it equals in equation 1.

It's a lot easier to explain with an actual example. Maybe you can repost your question with the other equation...

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