how do you solve for x in this 12+x=3?

Question

please solve this fully

Answer 1

12 + x = 3

subtract 12 for both sides to get x by itself

x = 3 - 12

x = -9

Answer 2

3-12=x
-9=x

Answer 3

X=-9

Answer 4

Others have given you the correct answer. Here are the steps.

1. You want to get X all by itself on one side of the equation. You want to know what X equals, so put it alone on one side.

2. the way to get X all alone is to move everything else to the other side. Right now, you have 12+x on one side. Since you want to get X alone, you need to get rid of the 12. How do you remove something? You subtract it. (for example, if you have 20 apples and you remove 12 of them, you are subtracting 12 to get 8).

3. To keep an equation the same as the original, what ever you do to one side of the equals sign, you have to do to the other side. You can try this if you want. You can do anything you want to one side, even multiply it by a billion, and as long as you do the exact same thing to the other side, you still have the same valid equation.

4. So, you are going to subtract the 12 from the left side of the equation, so that the X is all by itself. That means you have to subtract the 12 from the other side, too.

5. Now you have x= 3 - 12

6. Since you are already doing equations that solve for X, I assume you know how to subtract a large number from a smaller number. 3 - 12 = -9.

7. Now, you have the equation X = -9 and you are done!

Answer 5

subtract 12 from both sides of the equation
12 + x - 12 = 3 - 12
x = -9

Answer 6

12+x=3
-12 -12

x=3-12
x=-9

Answer 7

subtract 12 from both sides

12 + x - 12 = 3 - 12
x = -9

Answer 8

12 + x = 3
substract 12 from both sides
x = -9

Answer 9

Subtract the 12 from both sides

12+x=3
-12 -12
________
x= -9

Answer 10

subtract 12
12 + x - 12 = 3-12
x= - 9