find the value of the variable that would make the equation true..

1.) 5x = 15
2.) -3x = 21
3.) 9x = -27
4.) -7x = -12
5.) 2/3 x = 8

3) -3

Find the value of the variable that would make the equation true

bkt

Honestly,I dont have an answer butttttt,what value of 3x makes this question true?

To find the value of the variable in each equation, you need to solve for x by isolating it on one side of the equation. Here's how you can do that for each equation:

1.) 5x = 15
To isolate x, divide both sides of the equation by 5:
5x/5 = 15/5
x = 3

So, the value of the variable x that makes the equation true is 3.

2.) -3x = 21
To isolate x, divide both sides of the equation by -3:
-3x/-3 = 21/-3
x = -7

So, the value of the variable x that makes the equation true is -7.

3.) 9x = -27
To isolate x, divide both sides of the equation by 9:
9x/9 = -27/9
x = -3

So, the value of the variable x that makes the equation true is -3.

4.) -7x = -12
To isolate x, divide both sides of the equation by -7:
-7x/-7 = -12/-7
x = 12/7 (or approximately 1.7143)

So, the value of the variable x that makes the equation true is 12/7 (or approximately 1.7143).

5.) (2/3)x = 8
To isolate x, multiply both sides of the equation by the reciprocal of 2/3, which is 3/2:
(3/2)(2/3)x = (3/2)8
x = 12/2
x = 6

So, the value of the variable x that makes the equation true is 6.

you want to get x by itself, so divide by its coefficient:

#2:
-3x = 21
divide both sides by -3 and you have
x = -7

#5:
divide by 2/3 -- that's the same as multiplying by 3/2, so

x = 8 * 3/2 = 12

Now you can probably do the others, no?