Question

Solve for z.

- 9 - 6z = - 99
plz help

Answer 1

-9-6z +9 = -99 +9
-6z = -99
-(-6z) = -(-99)
6z = 99
(6z) /6 = 99/6
z = 99/6

Answer 2

sorry a little mistake in 2nd line.

Answer 3

Please don't do all the work for them >.<

Btw you messed up in step two :P

Answer 4

it is -90

Answer 5

can you explain it for me

Answer 6

so i know how to do it

Answer 7

Where is your doubt?

Answer 8

what does the z do

Answer 9

It is just a variable.

Answer 10

well my question is how did you get -90

Answer 11

im kinda new to this

Answer 12

-9 - 6z = -99
for getting the value of z 1st remove that (-9) from left hand side.
to do this add +9 to both side.

Answer 13

ok

Answer 14

In a equation you have to do the same operation in both side . otherwise it will not remain as a equation.

Answer 15

So in LHS after adding +9 , you will get -6z
because that +9 and -9 will give you 0 and 0 -6z = -6z

Answer 16

oh

Answer 17

In RHS you have -99 . you are adding +9 to it.
so -99 +9 will give you -90
To understand this, just do the substraction from greater number to smaller one.
this will give you 99 - 9 = 90
then put the sign in your answer.
sign of answer will be the sign of the greatest number.
so here your answer will be - 90

Answer 18

oh ok thank you so much

Answer 19

@Luigi0210 Yes , it should be -90.