I need help solving it the graph equation is y=9x

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

Simply 8x squared + 5(7x squared- x) - 2x =

What does x = in this equation x+3+2x=x+5