Question

-3c-12=-5+c
help! I don't understand

Answer 1

i dont know .-. I missed the lecture

Answer 2

first you want to get all the variables on one side and numbers on another:
-3c - c = -5 + 12
-4c = 7
then divide both sides by -4 to get the variable by itself
c = -7/4

Answer 3

Okay, your going to want to get c by itself. Hmm, pick the c on the right side of the equation because it's positive.

So you have -5+c on the right side of the equation. How do you get the c alone over there?

Answer 4

-3c-c=-5+12
-4c=7
c=-7/4

Answer 5

-3c-c=-5+12
-4c=7 divide both sides by -2 and then u'll get,
c= -7/4 or 1 3/4 :)

Answer 6

say you have a, b, c and d as a number and x as a variable:

if you have ax + b = cx +d
you always want to get all the numbers and variables on one side, so always pick a side where you want variables and numbers:

say you want the left to have variables and the right to have numbers:
so then you would proceed:
ax - cx = d-b
then you would divide by that number multiplied by x to get x by itself.

if you have x + a = b then you would subtract to get x by itself
if you have x - a = b then you would add to get x by itself (add both sides, same as above)
if you have ax = b, divide both sides by a to get x by itself
and if you have x/a = b then multiply both sides to get x by itself.

Answer 7

whatever you have on one side with the variable, you basically want to do the opposite to the other side

Answer 8

Where did you get the 4???