That is true because as you can see in the other 2 equations, they both have z on one of the sides meaning that the sides that don't have z are equal to each other
Hope this helps :)
That will be 4/4/7 hope this helps
The equation is y=1/2x+2
hope this helps
9(3+5) is equivalent because factoring a 9 out of both 27 and 45 leaves us with 9(3+5).
