Question

please answer pleade​

Answer 1

Answer:

57 is the answer

mark me as brainliest..

Answer 2

Answer:

57 is the right answer

Step-by-step explanation:

21+3=24, 24+6=30

21+3=24, 24+6=3030+3=33, 33+6=39

21+3=24, 24+6=3030+3=33, 33+6=3939+3=42, 42+6=48

21+3=24, 24+6=3030+3=33, 33+6=3939+3=42, 42+6=4848+3=51, 51+6=51

Hope it helps.Mark It as Brainliest.......