Solve the system by the substitution method,and identify the
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Solve the system by the substitution method,and identify the value of x of the solution.
2x - 5y = 3
y = -2x + 1
2x - 5y = 3
y = -2x + 1
把Y=-2X+1代入2x-5y=3
2X-5(-2X+1)=3
2X+10X-5=3
X=2/3
把X=2/3代入y = -2x + 1得出Y= -1/3
2X-5(-2X+1)=3
2X+10X-5=3
X=2/3
把X=2/3代入y = -2x + 1得出Y= -1/3
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