Respuesta :

Answer:3

Step-by-step explanation:

7x3=21 4x3=12 21÷12=9 3x3=9

Answer:

  • 3

Step-by-step explanation:

  • 7 × 3 = (x × 3) + (4 × 3)
  • 21 = 3x + 12
  • 3x = 21 - 12
  • 3x = 9
  • x = 9/3
  • x = 3

7 × 3 = (3 × 3) + (4 × 3)