SOLUTION: x=y+5 and 2x-3y=7 substition work out

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Question 842753: x=y+5 and 2x-3y=7 substition work out
Answer by jim_thompson5910(35256) About Me  (Show Source):
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x=y+5 and 2x-3y=7 substition work out

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2x-3y=7

2(y+5)-3y=7 ... replace every copy of x with y+5 (since x = y+5)

2y+10-3y=7

-y+10 = 7

-y = 7-10

-y = -3

y = -3/(-1)

y = 3

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x = y+5

x = 3+5

x = 8

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Answer: x = 8, y = 3