A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.10x−8y=−124x+8y=96Add to eliminate x.Subtract to eliminate y.Add to eliminate y.Subtract to eliminate x.
Q. A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.10x−8y=−124x+8y=96Add to eliminate x.Subtract to eliminate y.Add to eliminate y.Subtract to eliminate x.
Given System of Equations: We are given the system of equations:{10x−8y=−124x+8y=96To eliminate a variable, we look for coefficients that are opposites or can be made into opposites. Here, the coefficients of y are −8 and 8, which are already opposites. Therefore, we can add the two equations to eliminate y.
Eliminate Variable: Adding the two equations:(10x−8y)+(4x+8y)=−12+9610x+4x=84This step is just the setup for the addition and does not involve any calculations yet.