Distance between of M(2,-3) and N(10,-3)​

What should be done to solve the equation? x+14=21 add 14 to both sides of the equation. subtract 14 from the left side of the equation. add 14 to the left side and subtract 14 from the right side of the equation. subtract 14 from both sides of the equation.

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Find the maximum value of p= 4x + 5y subject to the following constraints :