Step 1: To create x-coefficients that are additive inverses, Equation 1 can be multiplied by 2 −5 11 .

Multiplying Equation 2 by 2 5 10 will create additive inverses for the x-coefficients.

Step 2: Which is the next step to solve for y? Subtract 21 from Subtract 63 from Divide by 21 on both sides of the equation.

Step 3: Which is the next step to solve the system of equations for x?
Subtract 3 from both equations. Divide both equations by 3. Substitute 3 for y in one of the equations.

Step 4: Which operation will isolate the x-variable term?
Subtract 5 from Add 6 to Add 11 to both sides of the equation.

Step 5: What is the last step to solve for x? Divide both sides of the equation by 5. Subtract 5 from both sides of the equation.