Substitution Worksheet With Answer Key - Waynesville R-Vi School District Page 16
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386-2 Substitution
Since the left side does not equal the right, there is no solution to this system of equations.
5x y = 5
x + 3y = 13
5x y = 5
x + 3y = 13
First, solve the second equation for x to get x = 3y
13. Then substitute 3y
13 for x in first equation.
Use the solution for y and either equation to find x.
The solution is (2, 5).
2x + y = 4
2x + y = 4
2x + y = 4
2x + y = 4
First, solve the first equation for y to get y = 2x + 4. Then, substitute 2x + 4 for y in the second equation.
Page 16
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Use the solution for x and either equation to find y.
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