Question

What would 2x - y = (-5)
Y = -x -5 be?
(Solving using substitution)

Answer 1

Given the problem:
2x - y = -5
Given:
y = -x -5

We can substitute/replace y in the problem with the given value:
2x -(-x - 5) = -5
Distribute the negative:
2x + x + 5 = -5
Combine like terms:
3x + 5 = -5
Subtract 5 to both sides:
3x = -10
Divide both sides by 3:
x = -3.333 (repeating)