posted by erica on .
i need to know how to solve certain problems like this
i need examples of this and shown to me step by step
[step 1] -2y -2y
[step 2] -4x -4x
[step 3] divide both sides by -2
With first equation get x alone on one side.
x = .5y - 2.5
Substitute that value for x in the second equation and solve for y. Put that y value into the first equation to find value of x. To check, put both values into the second equation.
I hope this helps a little more. Thanks for asking.