SOLUTION: I have to solve by substitution. Clear fractions first. 1/5x+1/5y=1 1/5x-1/5y=9/5 I keep getting the wrong answer.

Question 449108: I have to solve by substitution. Clear fractions first.
1/5x+1/5y=1
1/5x-1/5y=9/5
I keep getting the wrong answer.
Answer by Leaf W.(135) (Show Source): You can put this solution on YOUR website!
1.
2.
==> Clear fractions by multiplying all elements by 5 (the LCD):
1.
2.
==> Simplify. Notice that (5) cancels out (/5):
1.
2.
==> Since you want to solve by substitution, you must isolate any variable in either of the equations. I am going to isolate the x in the second equation by adding y to both sides.
2.
==> Substitute this value (y + 9) for x into the first equation.
1.
==> Add like terms:
1.
==> Subtract 9 from both sides:
1.
==> Divide both sides by 2:
1.
==> So, your y-coordinate is -2. Next, solve for x by plugging this value of y into the equation for x found a few steps ago (x = y + 9):

==> Add like terms:

==> So, x-coordinate is 7. Plug these values for x and y into coordinate form (x, y): (7, -2)
***Therefore, your answer is (7, -2)
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