So let's do that. x is equal to 9 minus 2 times y, 2 times 7. Or x is equal to 9 minus 14, or x is equal to negative 5. So we've just, using substitution, we've been able to find a pair of x and y points that satisfy these equations.
In detail, we can follow the following steps to solve systems of equations by substitution: Step 1: Simplify both equations if possible. This includes removing parentheses, combining like terms
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Math can be daunting for some, but with a little practice it can be easy!