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