Question

What is the value of z in the equation 5z − 9 = 36?

4
5
6
9

Answer 1

@texaschic101

Answer 2

OK first add 9 to each side of the equation

5z - 9 = 36
+9 +9

what do we get?

Answer 3

i have no idea

Answer 4

- 9 + 9 = 0 right?

Answer 5

yea

Answer 6

and 36 + 9 = what?

Answer 7

45

Answer 8

right
so we have 5z on left side and 45 on the right side:-

5z = 45

we added 9 so we wanted 5z on its own on left side

Answer 9

* as we wanted

Answer 10

ok?

Answer 11

im still confused lol please dontget mad

Answer 12

oh wait i think i get it so would it be 40

Answer 13

5z - 9 = 36
first we aim to get 5z on its own
to do this we add 9 to both sides
( -9+9 = 0 so we are left with 5z on the left.

now so that the equation still balances we have also to add 9 to the right side.

Answer 14

yeah

Answer 15

its a bit like a chemical balance - if you put an extra weight on one pan , to make it balance again , you have to put the same weight on the other pan.

Answer 16

oh i figured it out its 9 thanks si much il give u a medal

Answer 17

yes you are right
z = 45/5 = 9

Answer 18

good job