Respuesta :
Answer:
x=21
Step-by-step explanation:
Hello
The solution to the equation is the numerical values of the letters for which equality is true.
To find the value of x , you have to isolate x. to do this, you pass the 13 that is positive number to the other side of the equation,When you pass a positive number to the other side of the equation it passes as negative number.
x+13=34
x=34-13
x=21
Have a great day