Question

3-x/11=12

Answer 1

lets guide her through this one so he can learn the steps

Answer 2

Okay.

Answer 3

we need to isolate x in the equation, so first step is to remove the 3 from the left side

Answer 4

wouldn't i have to add 3 on both sides in stead of subtracting?

Answer 5

but you have 3 on left side already, if you add 3 to both side you'll end up with 6, and you want the 3 to disappear, so you would subtract

Answer 6

i thought it would just cancel out?

Answer 7

If you add 3, you add 3 to another 3, which is not what we want. We want to "move" 3 to other side, so we have to remove 3 by subtract it.

Answer 8

3+3 = 6, 3-3 = 0

Answer 9

alright and then 3-12=9

Answer 10

so im stuck with x/11=12

Answer 11

*12-3 = 9
not other way around

Answer 12

Right. Now we need to deal with 11, do you know what to do?

Answer 13

then i would subtract 12 from 11 and 12?

Answer 14

so yes now you have x/11 = 12
how do we get ride of division, by doing the inverse of it right?

Answer 15

*rid

Answer 16

multiply

Answer 17

exactly, so we multiply by 11 to both sides to get rid of the division

Answer 18

so 12 would cancel out and 11 times 12 is 132

Answer 19

it's the 11 that's cancelled out from the right side, then remember we were left with 9 on the right side....so 9x11 = 99

Answer 20

sorry 11 would cancel out so I have 12 and x by itself

Answer 21

so would x=99?

Answer 22

No, we multiply both sides by 11, right? so now we have x = 12*11.

12*11=?

Answer 23

132

Answer 24

yep you got it, and no, we were left with 9 from subtracting 3 from both sides, so 9x11 = 99 x = 99

Answer 25

thank you so much! all the help means a lot!

Answer 26

never mind, i forgot that we subtracted 12 from 3 so x/11 = 9 so yeah, x = 99.

Answer 27

Glad we helped. (mostly Sheng, lol.)