Substitution Worksheet With Answer Key - Waynesville R-Vi School District Page 10

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6-2 Substitution
The solution is (29, 53).
y = 3x
2
y = 2x
5
y = 3x
2
y = 2x
5
Substitute 2x
5 for y in the first equation.
Use the solution for x and either equation to find y.
The solution is ( 3, 11).
2x + y = 3
4x + 4y = 8
2x + y = 3
4x + 4y = 8
First, solve the first equation for y to get y = 2x + 3. Then substitute 2x + 3 for y in the second equation.
Use the solution for x and either equation to find y.
Page 10
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