Question

please tell me with step-by-step its urgent.​

Answer 1

Answer:

42

Step-by-step explanation:

let the number of cows be x

according to conditions

21 = 1/3x + 7

equalize the denominator

21 = (x + 21)/3

21 x 3 = x + 21

63 = x + 21

63 - 21 = x

42 = x

please mark it as the brainliest

Answer 2

SORRY I DID KNOW THE ANEWER