Answer:
(-2,7)
Step-by-step explanation:
x+7=5
Subtract 7 from 7 and 5.
x=-2
Plug -2 into equation.
-2+y=5
Add 2 to -2 and 5.
y=7
(-2,7)
Answer:
C. (-2,7)
Step-by-step explanation:
In substitute method to solve a system of linear equations of two variables, We find the value of one variable from one equation and substitute it into the another equation.
Given system of equations is,
x + y = 5 -----(1),
y = 7 ----(2),
Substitute the value of y from equation (2) to equation (1),
x + 7 = 5
Subtracting 7 on both sides,
x = - 2
Hence, the correct order pair that shows the solution of the given system of equation is,
(x,y) = (-2,7)
Option C is correct.
