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Rewriting equations to solve for Y. X + 2Y = 7 Solve for Y. - X. -X. 2Y = 7 – X. 2. 2. Y = 7 – X 2. 1. X 2. Y = 7 . -. Y = -½X + 3½. 2. -2X + 3Y = 6 Solve for Y. + 2X. +2X. 3Y = 6 + 2X. 3. 3. Y = 6 + 2X 3. 2X 3. Y = 6
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X + 2Y = 7 Solve for Y - X -X 2Y = 7 – X 2 2 Y = 7 – X 2 1 X 2 Y = 7 - Y = -½X + 3½ 2
-2X + 3Y = 6 Solve for Y + 2X +2X 3Y = 6 + 2X 3 3 Y = 6 + 2X 3 2X 3 Y = 6 3 + Y = ⅔X + 2
4X - 3Y = 8 Solve for Y - 4X -4X -3Y = 8 – 4X -3 -3 Y = 8 – 4X -3 4X -3 Y = 8 - Y = ⁴⁄₃X - 2⅔ -3