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For each system of equations, determine if you should add or subtract the equations. Explain your reasoning but do not solve it.

For each system of equations, determine if you should add or subtract the equations-example-1
User Lapys
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Step-by-step explanation

We have to add these two equations in order to eliminate the k variable. Since the coefficient has different signs in each of the equations - it's positive in the first equation and negative in the second equation - we have to add the equations, not subtract them.

User SeventhWarhawk
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