14+3n=8n-3(n-4) foes this have an answer, no, or infinite solution

Evaluate the expression for the given value of the variable 7a - 4a for a =8

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39

Solving algebraic equations 2m+3=11