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Determine the x-coordinate of the solution of the system of equations below. You may use any method: 2x-y=10
x+y=2


Determine the y-coordinate of the solution for the system of equations. You may use any method. 2x-y=10
x+y=2


Plz help i really don't understand these two Q please help by showing me step by step ;-; im so sorry

Respuesta :

Q1: 
make y the subject for both equations
2x - y = 10, y = 2x - 10 
x + y = 2, y = 2 - x 
therefore
2 - x = 2x - 10 
2 + 10 = 2x + x 
12 = 3x
4 = x 

Q2: 
Sub x into an equation to find y 
x + y = 2
y = 2 - x 
y = 2 - 4 
y = -2 

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