Question 179832
Y=2x+3
Y=4x-1 
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Since they are both equal to Y they must be equal to each other.

2x+3 = 4x-1

Substract 2x from both sides to get:

3 = 2x-1

Add 1 to both sides to get:
2x = 4

Divide both sides by 2 to get:

x = 2
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Cheers,
Stan H.