Respuesta :
Answer:
12
Step-by-step explanation:
3x + 6 = 42
subtract 6 on both sides
3x = 36
divide 3 on both sides
x = 36 ÷ 3 = 12
Hey!
The first thing we do is subtract 6 From both sides (or, 6 from 6 and 6 from 42)
Now you equation is 3x=36
Now you didvide 3 from both sides, to isolate x.
3/3= 1 (But because X is there, we just say X)
Now, 3/36.
3/36 is 12
So, your answer is
X=12
Let me know if you need more explanation on the problem.
Hope this helps!