Respuesta :

gaytansarina

Answer:

x = 4

Step-by-step explanation:

Isolate the variable by diving each side by factors that don't contain the variable.
X=4

Explanation: 42-3x=30
So you subtract 42 on each side leaving you with -3x=-12 and then you divide by -3 on each side meaning -12/-3 which leaves you with x=4