im confused on this one someone plz help me
3x - 3 = 15
a. 4
b. 5
c. 6
d.7
i think its b but im not sure check this 4 me
If you "think" it is b) then why did you not try that choice?
if x=5, then
left side = 3(5)-3 = 15-3 = 12
right side = 15
nope, it's not b)
add 3 to both sides and you get
3x = 18
...
or, since you appear to have guessed 5 because 15/3 = 5,
just be sure to divide everything by 3, giving you
x-1 = 5
...
To solve the equation 3x - 3 = 15, we need to isolate the variable x on one side of the equation. Here's how you can do it step by step:
1. Start by adding 3 to both sides of the equation to get rid of the -3. This will give you:
3x - 3 + 3 = 15 + 3
Simplifying this, you get:
3x = 18
2. Next, divide both sides of the equation by 3 to isolate x. This will give you:
(3x)/3 = 18/3
Simplifying this, you get:
x = 6
So the solution to the equation 3x - 3 = 15 is x = 6. Therefore, the correct answer to the question is c. 6.