Question 1058581: solve for X and Y using substitution method
2x=y+1
x+y=-1
thank you
Answer by solve_for_x(190)   (Show Source):
You can put this solution on YOUR website! Solving the first equation for y gives:
y = 2x - 1
Substituting 2x - 1 in place of y in the second equation then gives:
x + (2x - 1) = -1
x + 2x - 1 = -1
3x - 1 = -1
3x = -1 + 1
3x = 0
x = 0
Then, with x = 0
y = 2x - 1 = 2(0) - 1 = -1
Solution: x = 0, y = -1
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