Three solutions for 5x+7y=19

Just sub in ANY number for x and solve for y

5x + 7y = 19 ... lets say x = 0

5 (0) + 7y = 19

7y = 19

y = 19/7 ... so when x = 0, y = 19/7 ... (0,19/7)

5x + 7y = 19 ... lets say x = 1

5 (1) + 7y = 19

5 + 7y = 19

7y = 19 - 5

7y = 14

y = 14/7

y = 2 ... so when x = 1, y = 2 ... (1,2)

5x + 7y = 19 ... lets say x = 3

5 (3) + 7y = 19

15 + 7y = 19

7y = 19 - 15

7y = 4

y = 4/7 ... so when x = 3, y = 4/7 ... (3,4/7)