Answers:
1. No solutions
2. Infinitely many solutions
Explanation:

Add common terms from both sides of the equation (10x and 3x) & (7 and 10)

Subtract common terms from both sides (13x and 13x)

7 does not equal 17; thus, there are no solutions

Add common terms from both sides of the equation (-6x and 8x) & (-5 and -1)

Reorder the right side of the equation

Since this is a true statement, there are infinitely many solutions