Question 1061087

I have a final tomorrow and I need help. It says to use the substitution method on the equation y/2 -x=1 and the other equation (cause it's in systems of equations) is x+y+7=0. What do I do? 
<pre>What you DON'T DO IS what the other person suggested. It's TOTAL NONSENSE!
Is it: {{{matrix(1,6, y/2 - x = 1, or, y/(2 - x) = 1, "======>", eq, "(i)")}}}? You have to use PARENTHESES

If it's the FORMER, then just ADD x to both sides to get: {{{y/2 - 1 = x}}} ===== eq (i)
x + y + 7 = 0 ------- eq (ii)
You then substitute the value for x into eq (ii) and solve for y
Then use the value of y to solve for and determine the value of x 

If it's the LATTER, then just solve eq (ii) for x or y, and substitute that value into eq (i)
That's all.....nothing COMPLEX!!