Respuesta :

it is - 36 because move the variable to the left hand side and change it sign the. are the number 15 +21 = 36. also change the signs on both sides of the equation

Answer:

x=-36

Step-by-step explanation:

  1. -7=x/3+5
  2. -21=x+15
  3. -21-x=15
  4. -x=15+21
  5. -x=36
  6. x=-36