Substitution Worksheet With Answer Key - Waynesville R-Vi School District
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386-2 Substitution
Use substitution to solve each system of equations.
y = x + 5
3x + y = 25
y = x + 5
3x + y = 25
Substitute x + 5 for y in the second equation.
Substitute the solution for x into either equation to find y.
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.
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Use the solution for y and either equation to find x.
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