SOLUTION: SUBSTITUTION: 8x=-2y-10 2x=4y

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Question 123558This question is from textbook prentice hall mathematics
: SUBSTITUTION:
8x=-2y-10
2x=4y This question is from textbook prentice hall mathematics

Answer by chitra(359) About Me  (Show Source):
You can put this solution on YOUR website!
The given expression is:

8x = -2y - 10 ---------------------(1)

2x = 4y -------------------(2)

This can be written as ++x+=+%284y%2F2%29+

==> x = 2y --------------(3)

Substituting (3) in (1) we get:

8(2y) = - 2y - 10

16y = - 2y - 10

16y + 2y = -10

18y = -10

y = -%2810%2F18%29

==> y = - 5/9

By back substitution we can find the value of "x".


x = 2y

x = 2%28-+5%2F9%29

x = - 10/9

Thus the solution.