So basically you have to find z(isolate the z).
-4z+2=102
-2 -2
-4z = 100
------------- z=-25 (DO keep in mind that if you multiply two negative together
-4 it would make the product positive)
Now it doesn't hurt to check the answer. All you have to do is plug in -25 for z
-4z+2=102
-4(-25)+2=102
100+2=102
102=102 <----- the equation on the left had to equal the answer on the right and
it did so it means that z=-25 is correct. Hope this helps!! :)
