Question

 Solve the system, using any method.  y = x + 2 and x + 2y = 25

Answer 1

Y = X + 2 X + 2 Y = 25

Iin the 2nd equation, let us Substitute in place of Y its value : X + 2

We get X + 2 (X + 2) = 25

X + 2 X + 4 = 25
3 X + 4 = 25
3 X = 25 -4 = 21

X = 7

Now use the 1st equation: Y = X + 2 = 7 + 2 = 9

Answer 2

`Elimination\ method\\\\\left\{\begin{array}{ccc}y=x+2&|subtract\`