SOLUTION: y = 3x - 10 y= 2x - 5 i need to use this using the substitution method

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Question 179608This question is from textbook prentice hall mathematiccs Algebra 1
: y = 3x - 10
y= 2x - 5
i need to use this using the substitution method This question is from textbook prentice hall mathematiccs Algebra 1

Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
y = 3x - 10.....eq 1
y= 2x - 5.......eq 2
:
take y's value from either eq 1 or 2 and plug it into the equation you didnt pick from for every value of y. I pick y's value from eq 1 which is 3x-10, and will plug that into eq 2
:
(3x-10)=2x-5
:
highlight%28x=5%29subtracted x and added 10 to both sides.
:
now take x's found value and plug it into either eq. I choose eq 2
:
y=2(5)-5=5
:
(5,5)
:
graph%28300%2C300%2C-10%2C10%2C-10%2C10%2C3x-10%2C2x-5%29