The given system of equation:
y = -x + 7 (1)
y = 2x + 7 (2)
Apply substitution method to solve for x & y
Substitute the value of y from the equation(2) into equation(1)
y = 2x + 7
-x + 7 = 2x + 7
7 - 7 = 2x + x
3x = 0
x = 0
Now, susbtiute the value of x = 0, in the equation (1)
y = - x + 7
y = -(0) + 7
y = 7
So, the solution of the system of equation is : (x, y) = (0, 7)
Answer : (x,y) = (0,7)
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