Respuesta :

Subtract 3.5 from both sides

x = 7 - 3.5

Simplify 7 - 3.5 to 3.5

x = 3.5

Answer:

x=3.5  

Step-by-step explanation:

(3.5+x=7) = (7-3.5=x)

7-3.5=3.5