Respuesta :

Step-by-step explanation:

multiply 7 by the sum of 10 and t

  • 7×(10+t)

Here, we should multiply each terms in brackets with 7

  • 7×10+7×t
  • 70+7t

Step-by-step explanation:

  • 7×(10+t)
  • 7×10+7×t
  • 70 + 7t