Answer:
Part A
x = 4
Part B
10 - 2x = 7 + 5x (x = 4)
6 - 5x = 3 + 2x (x = 4)
7 - 3x = 4 + 6x (x = 6)
6x - 2x² = 3x + 5x² (x = 3x/7) I'm not sure what step is next though
hope this helps.
