SOLUTION: What is the answer to x+2y=10 2x-y=5? using the substitution method?

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Question 1013154: What is the answer to x+2y=10
2x-y=5? using the substitution method?
Found 2 solutions by MathLover1, Pinksparkles:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

x%2B2y=10.........eq.1
2x-y=5..........eq.2
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using the substitution method, first solve x%2B2y=10.........eq.1 for x
x=10-2y.........substitute it in eq.2
2%2810-2y%29-y=5........solve for y
20-4y-y=5
20-5y=5
20-5=5y
15=5y
15%2F5=y
highlight%28y=3%29
now substitute it in x=10-2y and find x
x=10-2%2A3
x=10-6
highlight%28x=4%29


Answer by Pinksparkles(13) About Me  (Show Source):
You can put this solution on YOUR website!
This explains it really well! http://www.cymath.com/answer.php?q=x%2B2y%3D10%202x-y%3D5
Hope it helped