The answer is: TRUE. The inequality is true.
But if you meant 6x≤10.5, we need to solve for x:
x≤10.5/6, x≤1.75, which is the solution. Because it's an inequality, this solution tells us that x can be any number less than or equal to 1.75. This means there's a set of numbers rather than just one number which satisfies the inequality.