We are asked to solve the following system of equations using the substitution method: $2x - y = 2$ $5x + 6y = 8$

AlgebraSystems of EquationsSubstitution MethodLinear Equations
2025/5/19

1. Problem Description

We are asked to solve the following system of equations using the substitution method:
2xy=22x - y = 2
5x+6y=85x + 6y = 8

2. Solution Steps

First, solve the first equation for yy:
2xy=22x - y = 2
y=2x2y = 2x - 2
Next, substitute this expression for yy into the second equation:
5x+6y=85x + 6y = 8
5x+6(2x2)=85x + 6(2x - 2) = 8
5x+12x12=85x + 12x - 12 = 8
17x=2017x = 20
x=2017x = \frac{20}{17}
Now, substitute x=2017x = \frac{20}{17} back into the equation y=2x2y = 2x - 2:
y=2(2017)2y = 2(\frac{20}{17}) - 2
y=40173417y = \frac{40}{17} - \frac{34}{17}
y=617y = \frac{6}{17}

3. Final Answer

The solution is (x,y)=(2017,617)(x, y) = (\frac{20}{17}, \frac{6}{17}).

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