If either of the variable terms would cancel out the corresponding variable term in the other equation, you can use the Elimination Method to solve the system.
(16,-41)
Practice makes perfect
Since the y-variables have opposite coefficients, we will use the Elimination Method. To solve a system of linear equations this way, one of the variable terms needs to be eliminated when one equation is added to or subtracted from the other equation.
3 x+ y=7 & (I) -2 x- y=9 & (II)We can see that the y-terms will eliminate each other if we add (I) to (II).
