-12((5)/(6)a-(7)/(8))+(1)/(14)(3(1) /(2)a-1(2)/(5))

pls someone help

What are “like terms”? why can we only add like terms?

An apartment has a replacement cost of $950,000 and contents valued at $1,450,000. it has a classification of a and a territory rating of 3. find the annual premium a) $10,185 b) $9,230 c) $3,155 d) $13,830

What statement is true? 2x^2-9x+2=-1