If x+y=-10 and x-y=2, what is that value of x?
add the equations.
2x=-8
x=-4
X = 8
To find the value of x, you can use the method of solving a system of equations. In this case, we have two equations:
1) x + y = -10
2) x - y = 2
To solve these equations, you can add the two equations together, eliminating the y variable:
(x + y) + (x - y) = -10 + 2
2x = -8
Next, divide both sides of the equation by 2:
2x/2 = -8/2
x = -4
Therefore, the value of x is -4.