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4. What is the x-coordinate of the solution of the system?
x + y = 3
4x - y= - 38 
HELP !!! pleasee

Sagot :

Ananda26idn
The solution is a set of numbers x,y that satisfy both equations.

x+y =3
x = 3 -y

4x - y = -38
4(3 -y) = -38
12 -4y = -38
-4y = -50
y= 12.5

x = 3 -y
x = 3 -12.5
x= -9.5
The x-coordinate is -9.5, y is 12.5
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