Question

twice the difference of a number z and 12 is equal to 10.

Answer 1

Answer:
$z = 17$



Explanation:
Twice the difference of a number "z" and 12 is
$z - 12$
Twice that is
$2(z - 12)$
And that is equal to ten so now we have our equation that we need to solve for z
$2(z - 12) = 10$
First divide both sides by two
$z - 12 = 5$
Then add 12 to both sides
$z = 17$
Now you have your answer, z=17

Hope this helps, cheers!