Answer:
x = 17
Step-by-step explanation:
2x = 5x - 51
51 = 5x - 2x
51 = 3x
x = 51/3
2x = 5x -51
2x + 5x = -51
7x = -51
7x ÷ 7 = -51 ÷7
x = -7.2