SOLUTION: Solve using the Subsititution method: x-y=4 y=2-x

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Question 103245: Solve using the Subsititution method:
x-y=4
y=2-x
Answer by MathLover1(20855) About Me  (Show Source):
You can put this solution on YOUR website!

x-y=4 from equation x+=+y+%2B+4 substitute this value of x in second equation
y=2-x+ = > y+=+2+%96+%28y+%2B+4%29
+y+=+2+%96+y+%96+4
y+%2B+y+=+-4
2y+=+-4
y+=+-2
now substitute y+=+-2 in x-y=4 and find x
x-y=4+
x-%28-2%29=4+
x+%2B+2+=+4
x+=+4+%96+2
x+=+2++