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How do i solve systems of equations by adding or subtracting? - Answers

You multiply one equation by some constant, or both equations by different constants, and then add one equation to another (or subtract). Here is an example: 2x + 4y = 30 x + y = 10 Multiplying the second equation by (-2), you get: 2x + 4y = 30 -2x -2y = -20 Now you can add the two equations together, resulting in: 2y = 10 You can solve this for "y"; then you can replace the value you found in any of the original equations to find the corresponding value for "x".



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How do i solve systems of equations by adding or subtracting? - Answers

https://math.answers.com/math-and-arithmetic/How_do_i_solve_systems_of_equations_by_adding_or_subtracting

You multiply one equation by some constant, or both equations by different constants, and then add one equation to another (or subtract). Here is an example: 2x + 4y = 30 x + y = 10 Multiplying the second equation by (-2), you get: 2x + 4y = 30 -2x -2y = -20 Now you can add the two equations together, resulting in: 2y = 10 You can solve this for "y"; then you can replace the value you found in any of the original equations to find the corresponding value for "x".



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https://math.answers.com/math-and-arithmetic/How_do_i_solve_systems_of_equations_by_adding_or_subtracting

How do i solve systems of equations by adding or subtracting? - Answers

You multiply one equation by some constant, or both equations by different constants, and then add one equation to another (or subtract). Here is an example: 2x + 4y = 30 x + y = 10 Multiplying the second equation by (-2), you get: 2x + 4y = 30 -2x -2y = -20 Now you can add the two equations together, resulting in: 2y = 10 You can solve this for "y"; then you can replace the value you found in any of the original equations to find the corresponding value for "x".

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      You multiply one equation by some constant, or both equations by different constants, and then add one equation to another (or subtract). Here is an example: 2x + 4y = 30 x + y = 10 Multiplying the second equation by (-2), you get: 2x + 4y = 30 -2x -2y = -20 Now you can add the two equations together, resulting in: 2y = 10 You can solve this for "y"; then you can replace the value you found in any of the original equations to find the corresponding value for "x".
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