Solving for a system of linear equations with substitution

Question

x+7=y

2x=y-10

Answer 1

It is always easier to solve the equation where x and y both have a coefficient of 1, Holly. I would suggest solving the first equation for either x or y, and then substituting that value into the second equation. I will let you decide whether you wish to solve for x or y. You should be able to proceed from there.