Respuesta :

Answer:

x would be 15

Step-by-step explanation:

because 21 times 5 is 105 and you would do 3 times 5 is 15

Answer:

= 15

Step-by-step explanation:

If 21 = 105

What about 3 = ?

= (3 x 105) ÷ 21

= 315 ÷ 21

= 15

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