,

Subtract from both sides of the equation.

Add to both sides of the equation.

Create a graph to locate the intersection of the equations. The intersection of the system of equations is the solution.

Solve by Graphing x+y=1 , y-x=1

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# Solve by Graphing x+y=1 , y-x=1

,

Subtract from both sides of the equation.

Add to both sides of the equation.

Create a graph to locate the intersection of the equations. The intersection of the system of equations is the solution.

Solve by Graphing x+y=1 , y-x=1