Answer:
Explanation:
Let's solve for x.
x+7y=−39
Step 1: Add -7y to both sides.
x+7y+−7y=−39+−7y
x=−7y−39
Let's solve for y.
x+7y=−39
Step 1: Add -x to both sides.
x+7y+−x=−39+−x
7y=−x−39
Step 2: Divide both sides by 7.
7y/7 = −x−39/7
y= −1/7x+−39/7