Respuesta :

2x+30=186

We move all terms to the left:

2x+30-(186)=0

We add all the numbers together, and all the variables

2x-156=0

We move all terms containing x to the left, all other terms to the right

2x=156

x=156/2

x=78

Answer:

78

Step-by-step explanation:

2x + 30 = 186

2x=186-30

2x=156

x=156/2

x=78