Answer:
z = 473
Explanation:
So the equation looks like this:
z-303=170
So in order to only get the variable z on one side and the numbers on the other we are going to have to add 303 to both sides of the equal signs:
z - 303 = 170
+ 303 +303
z = 473
So the answer to what the variable z equals is 473, so how do we know if 473 is the answer? Well we substitute 473 where the z variable is in the equation and solve it:
z-303=170 or (473) - 303 = 170
and if you subtract 303 from 473 you will get 170 as your answer
I hope this helps you!