Show that (2.1) is a solution of the system of equations.
Substitute (2, 1) into x + 3y = 5 to get -
Simplify the equation to get -
Substitute (2, 1) into y = -x+ 3 to get -
Simplify the equation to get -

Show that 21 is a solution of the system of equations Substitute 2 1 into x 3y 5 to get Simplify the equation to get Substitute 2 1 into y x 3 to get Simplify t class=