Solve y=2x-1 2x+y=3?
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Substitue Equation (1) into Equation (2) (Plug in equation 1 for y) giving you 2x+(2x-1)=3. Solving this new equation of 4x-1=3 gives us x=1. Plugging in x=1 to any of the equations will give you y=1.
Answers: X=1, Y=1.
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2x+(2x-1)=3 now you want to combine like terms, so you get 4x-1=3, now add 1 to both sides and you get 4x=4. Divide both sides by 4 to solve for x,
x=1
now plug x=1 into any of the two equations
y=2(1)-1, so now you get y=2-1, and solve
y=1
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