Substitution Worksheet With Answer Key - Waynesville R-Vi School District Page 2
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386-2 Substitution
The solution is (5, 10).
x = y
2
4x + y = 2
x = y
2
4x + y = 2
Substitute y
2 for x in the second equation.
Use the solution for y and either equation to find x.
The solution is (0, 2).
3x + y = 6
4x + 2y = 8
3x + y = 6
4x + 2y = 8
First, solve the first equation for y to get y = 3x + 6. Then substitute 3x + 6 for y in the second equation.
Use the solution for x and either equation to find y.
Page 2
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